key broke and stuck in U-lock with bike locked Luck would have it my key broke off when I was trying to unlock my bike. The lock is U shaped ABUS. I've read people had this before, however biggest problem is that bike is now stuck at the school, locked to a metal grid. Half of the key is inside the lock and there is no way to pull it out. Obviously I can't take it to locksmith and my moves are pretty limited due to position it's locked in. I don't care about the lock. I wish to free my bike without losing the front wheel. Any suggestions?

Edit: Issue solved, by smashing lock few times to dislodge it since key broke very close to open position.
If the key's broken flush and you can't grab it with a pair of needlenose pliers, you should call a locksmith or the police. 

In all likelihood, they will just cut the lock with an angle grinder or a hacksaw with a diamond blade. 

Though from the picture, it looks like the lock mostly is open and maybe a good hit with a hammer might dislodge the lock.