Hey Wicked, I've been through this...twice! No fun is it.
Here's what you need to do.
A) Definitely call Chuck to order a NEW damper. The one you have is ruined, do NOT try to reinstall or you'll be reinstalling it again later.
B) Order a Sean Roe pin kit. It's EASY to install and it's cheap insurance that this will never happen again.
C) The crankshaft is VERY hard...it's doubtful that you've damaged it though there may be some transfer material from the damper on it that you'll need to use emery cloth to get off.
D) You might as well replace the front oil seal while you have the damper off. The old one can be a pain to get off, but the new one is easy to put on.
E) Even with the pin kit, you should still loc-tite the bolt in place. There will be little torque on the bolt with the pin kit in place, but again, cheap insurance.
F) Don't try this job with the hood on, it's a PITA. Just get the hood off and set it aside.
G) It's a 2 person job to torque that bolt down...250 ft-lbs will require someone to a put the car in 1st gear and stand on the brakes to keep the engine from turning.