How sad....
I truly hope that someone can give this poor guy the home that he deserves...it sounds like his 2 and a half years have been rough.
Off topic, as for the poster that basically said it is okay to put a choke collar on a Yorkie, it's NOT! I believe you said that you breed Yorkies...you surely know how small their tracheas are, right?? I would NEVER put a collar and leash on my guys, let alone, a choke collar.
This thread makes me so sad. This precious dog may have lost out on finding a nice home. If he doesn't live outside and/or in a cage...then why is he close to being 3 years old and not housebroken? To the OP, it was so incrediblae that you were trying to do the right thing by helping him, I hope that it all still works out. Life is always going to bring little bumps in the road, just figure out how to get around them and move on.
I'm sorry that a fellow YT member may have slowed this process down.
Hugs,
Tammy