tire noise/alignment question

[Buck]

I had my 2.5RS in for a minor service a few weeks ago, and had the shop do an alignment since I hadn't had that checked in at least a couple of years. I don't think there was any immediate difference, but after a few days, I started to notice some new tire noise, seeming to come from the R rear. It has gotten progressively louder and now is hard to localize to one wheel.

 

Of course, my motivation was NOT to have my tires wear out prematurely. Has this shop trashed my Blizzaks???