I'v been watching this thread and I think, why didn't you just come back to THL and say it hasn't worked out, explained why and asked if anyone else wanted to buy it, with say £20 extra for petrol costs at the most.
Anyway my staffordshire bull terrier recently got put down with 'wobbly dog syndrome'. Where his brain stops telling him to do things he should be doing and it made him aggressive, clumsy and stiff legged.. My mum was heartbroken because she loved him and I told her about Vinnie and she said she would pay you what you paid for him with petrol costs. Does that sound ok?