After the conversation in the Cafe , Wilfred could have just smacked on the glass once or twice and shouted for The Doctor. Yes I know 10 would've still had to go in the other booth to release him and get flooded with energy but maybe that would've stuck two fingers up at the prophecy. We could've then had a nervy last 20minutes to the story with 10 walking on eggshells until the Grim Reaper caught up with him in a Final Destination style course correction moment
