I've messed up a few forks working on the street and I've found a few options. Have an LBS straighten it (cheap, effective). Get a new fork, a crowned 4130 model is $16 from Babac, a nicer molded crown version in better tubing is about $35. I've also seen/had done for me a ghetto a** process that involves taking the wheel off and pushing the blades against a curb. Though the last option was a short term fix for a wasted fork that was bent at the crown and therefore unsalvageable