
Oh...this brings back some horrendous memories.
just over two years ago we were in the same position...my crossbreed ruptured his cruciate 2 days before we were due to go abroad to visit a friend. It was his second rupture, having had the other one reparied 10 months previously. Like you, I didn't want anyone else to have the responsibility of looking after him. Our vet tried to talk us into going and dog would have had his surgery and stayed in the vets until we came home. We weren't happy to do that as we couldn't bear the thought that something might go wrong and we wouldn't be there. We were also reluctant to leave our other dog in case all of us being absent at the same time was too upsetting for her. In the end, OH packed me off to visit friend and insisted on staying home to take care of things. I really didn't want to go under the circumstances and I remember clearly sobbing my heart out in the check-in queue at the airport, surrounded by hundreds of holiday makers excited about catching the flight :-o I also ran up a huge phone bill calling home twice a day for updates on progress

And although it was lovely to see my friend for the first time in 5 years, I spent the whole week just wanting to get home. As it was, dog didn't come home from vets until after I got home so it would have made no difference if I was there or not.
So, sorry I can't offer any advice but I can empathise totally. I hope you find a suitable solution and that your Bully makes a good and speedy recovery :-)