My disk brake mounts (tabs) have been bent during air transport. The local bike shop says they won't bend it back due to safety and liability issues and says I need to replace the fork, which is not readily available as the bike is a not so common Salsa Fargo. Any advice on re-bending the tabs myself?

I'm supposed to leave on a bike tour tomorrow and need to decide whether riding fully loaded would be dangerous with a re-bent tab. The frame is all steel.