Looks like you've also bent your whole footpeg assembly. As long as you didn't bend the footpeg mount, which is that part that comes off of the frame, you should be alright. I can't really tell definatively from the photos. The good news is that the shifter isn't damaged and the footpeg mount can be removed and replaced. The actual shift lever can just be moved over to the new mount and straightened out. Patrick just recently finished remounting his, as the factory bolts had some loose and thepart that is replaceable had come free.
See this post as a guide
http://www.gz250bike.com/viewtopic.php? ... t=footrest
Hope this helps.
You may also need new footpegs, depending how badly twisted the mounting tabs are.