RE: CURB
You need to probably re-adjust the brakes on it. There a lot of ways to do this. However, since it was a crash, you probably want to take out the transmission and inspect the brakes properly. I have an Exceed Forza, and they don't handle going into curbs very well. ;-)
I created a video on how to disassemble/reassemble brakes for the Exceed Forza (as well as how to troubleshoot the brake system). PM me if you'fd like me to send you the link to the video. Thanks