He looks like a very happy boy just the same..I'm glad he's got you to love him no matter what. It's amazing how they can cope and make the best of what they're dealt with. It must be hard for you though, it's clear how much he's loved and adored in all of your posts..
The last I heard, you were putting off surgery until a later date...boy, I've missed so much. Have you looked into a wheel chair for him? I have a client who's dog just motor's around like he was born with wheels.
Anyway, Binn's a treasure....give him a big hug from me and my gang.