Sorry I missed this follow-up earlier. Within the site map you'll want to change the http://WWW to http://CDN for these image files. The www version of your site, and the cdn server are on two different IPs / server. You want images to be serving from the CDN one.

For 2, if you do use 301 redirection I'd recommend scripting it so that the script inspects whether or not it's an image file and then applies the cdn change. A pro in your area that works with REgex and htaccess will be able to guide you through that.

The username.net-dns.com thing... That's not your server is it? You can't apply redirects on servers outside of your control.  Cheers!

Within titles a comma is often seen as wasted space since the character count is so limited, but sites with them in their title still rank, see: https://encrypted.google.com/search?hl=en&q=lions%20tigers%20bears.  Headings tend to be as short as titles which is probably what dictates comma usage more than anything. Meta Descriptions using commas are fine and fairly common since they're written with less space constraints as the above.

Do you have the source on where you heard this first? Would be interesting to see how they're discussing it.  Cheers!

Moz just recently pushed their latest update: http://moz.com/products/api/updates which tends to affect these numbers. The important thing is to check how you're comparing to your competition. Often they see fluctuations as well. With the previous update, Rand put out this post regarding fluctuations: http://moz.com/community/q/have-questions-about-the-jan-27th-mozscape-index-update-get-answers-here:

...we crawled a massively more diverse set of root domains than ever before. Whereas our previous index topped out at 192 million root domains, this latest one has 362 million (almost 1.9X as many unique, new domains we haven't crawled before). This means that DA and PA scores may fluctuate more than usual, as link diversity are big parts of those calculations and we've crawled a much larger swath of the deep, dark corners of the web (and non-US/non-.com domains, too). It also means that, for many of the big, more important sites on the web, we are crawling a little less deeply than we have in the past (the index grew by ~31% while the root domains grew by ~88%). Often, those deep pages on large sites do more internal than external linking, so this might not have a big impact, but it could depend on your field/niche and where your links come from.

Cheers!

Right. Not everything is going to be served from cdn. It's most likely setup for your images so your sitemap will still reside on www. Make sure to point to the front end files though as those are the publicly accessible ones.

Meta description will be what you write as the suggested description for Google to display in the search results, but Google will often rewrite the description to better match someone's search and their understanding of your page. They'll either pull text from another location on your page that matches terms or related terms of a user's search, rewrite title tags from time to time, or display what you write.  See: https://support.google.com/webmasters/answer/35624.  Cheers!

You're on it. Redirecting to the new image source and submitting a new sitemap pointing to the URL 3 location for your images will be big steps in the right direction.  Be sure to follow the instructions here for your sitemap: https://support.google.com/webmasters/answer/178636 as well as reviewing image publishing guidelines: https://support.google.com/webmasters/answer/114016. Cheers!

Hi Brett. The biggest changes that you'll want to address / consider when working on this come from last July's Penguin update: http://moz.com/google-algorithm-change (see: Penguin - July 24, 2014). Mainly that, "Google has released a new algorithm to provide a more useful, relevant and accurate local search results that are tied more closely to traditional web search ranking signals."  It sounds like you'll want to create content on your site that does as well traditionally as your HQ content for: CA, Hawaii, CO, AZ, and UT.  This will help spur your localized results on as well.

More in-depth on the disappearance, check: http://blumenthals.com/blog/2014/07/25/google-updates-local-algo-with-more-web-based-signals-turmoil-in-serps/, "In searches I follow there has been both ups, downs and the disappearance of the pack where it was previously prominent. In one case a detached listing which had been doing well both organically and locally but wasn’t in the pack returned to the pack."

It's likely your current listings will stay as long as you don't nuke content on your site. The addition of service areas else where matching additional content on site would be a natural fit.  Cheers!