Wow. That stinks. And that really stinks that no one came out to see what the racket was about sooner.
I wonder why they caused so much damage away from the lock... weird...
Yeah, that hockey puck lock would be perfect. Put it on with carriage bolts and I'd make sure some carriage bolts held on those hinges, too. I bought some huge hinges at HD and they're held on with four 3/8" carriage bolts per side (of the hinge). They'd have to use a grinder to get in.