The overhang on that doesn't look too bad to me. The problem is, it's very hard to tell by pictures. The other problem is that everyone rides different with different angles. The only real way to tell when overhang isn't so obviously too much is to actually strap in and mimic a carve. You can do this by holding onto something. Mimic the carve and see if your toe/heel touches the ground before you even fully engage.
Just for reference, my buddy David Z rode my 157 Proto with his size 11 32 TM 2 boots which are pretty bulky. He had 0 issues on it and he rides everything including lots of park.
Agree with that. The overhang does not look too bad - but is your boot centered over the board? Common problem with Burton bindings as you hit the max/min size for the binding, as the heel hoop is not adustable and you have solely rely on the holes in the disk to fine-tune the boot position...