Here is another I dont know what to tell you to do post.......BUT
....You did the right thing by bringing him, but that just my 2 cents.....Just think if he is upset with you there and 2 pups, just think how scared and upset he would have been in a kennel, with no mom, and a bunch of other unknown dogs, so look at this as the glass is half full, you did the right thing for your pup...and the next time you have to go it will be at least a tiny bit more easier for him, if your luck is anything like mine..the last day there he will be acting like he doesnt want to go home......
and remeber, you rescued him so no telling what kind of odd places he as been subjected to before.he is lucky to have you and you are doing the right thing.....hang in there each day will get better and better..............
CHRISTINE