Seriously, though. If you pop the bridge off, I think there's enough access in the arm holder to pop out the remaining stub. Then just buy a new arm.See what you've done! Weren't you told it's not a toy! But noooooo, you kept yanking on it until it broke off! You can't krazy glue that back on, mister!
Now be happy it wasn't your penis.
On a serious note, any ideas how to rectify the situation with minimal damage to the bridge?