My first instinct would be to find an anvil, a hammer, a pair of pliers, and a blowtorch.  Take the lever just above where you have your fingers in the photo with the pliers (Vice Grips will work even better).  Then, put a little bit of heat on it, but not too much--you don't want to turn it cherry red.  Then place the lever on the anvil still holding onto it with the pliers, and tap on it where it's bent until you have the lever straightened out to where it can be used again.  After you're done, dip it into a bowl of oil to quench it.