I think this is a pretty tough decision, but i'd probably be willing to go broke on this hand. I'd probably call turn, and call river (i assume he would push river). You could push turn if you think he picked up a flush draw, but i wouldn't want him to stop bluffing if he has air.

George could have a Q, but he could just as easily have nothing/draw. I guess this is obvious too, but the only real decision is fold or go all-in(whether you push turn or he pushes river). i'd lean towards calling him down, even if I pay off a queen.

i'm not all that confident in this line either, so if someone has a better line, i'd love to hear it.