If the place is a @@@@-pit, I don't see why people are making up these elaborate excuses for them. I don't shop at pet stores that have piles of feces in the corners of tanks anymore, because I've learned about how I want to take care of my animals - and that doesn't fall under the list. Sure, dirty uniforms are no big deal and are easily explained, but if they had several animals with shedding problems, I certainly wouldn't want one of them, and I certainly wouldn't go back later to buy anything.
The guy says he saw mistreatment, and many of you are saying "well stuff happens." Sure, it happens, but a pet store that actually specializes in these types of animals in particular shouldn't let it happen so bad that somebody feels the need to actually complain.
That said, I've never been there so whatever.