I've never met Teal or Red Chrome except via internet, but I have met Dianna in person, seen many of her dogs performing in person, know people who own her dogs in person, and consider her a good person and a good friend.
The allegation that she would fabricate something like this is absolutely freaking disgusting to me. Whoever allowed that puppy to get into such horrible shape absolutely should be held accountable. And if the timestamps on her pictures correspond to the date she received him back, and seeing the two recent pics that Teal posted, well, in my mind it's cased closed.