I got a new Raceline Performance about 3 weeks ago, and today I went racing. Finished the race fine, but on the way home doing under 20km/hr I changed the chainring to low, but it came off as it sometimes does. As I try and put it back on using the gear shifter like I have done in the past, I hear a bang from my rear deralieur, and the pedals won't freewheel/back-pedal. The deralieur is bent and sticking through between some spokes, and the ratchet in the gears isn't turning.
Any ideas? I need help please!!! I'm going south for training next weekend and I have a big race the weekend after.