I'm assuming that the part that bent was the part that welds to the chassis... is that correct? If the chrome jack-shaft had bent, it wouldn't have retracted. I wouldn't ignore it and assume all is well, but it's certainly not the end of the world. I would get it fixed as soon as possible, because the next time you try to get level on a similar slope, it could bend even further, and then it may not retract. It shouldn't be difficult, or all that expensive, for a properly equipped shop to bend it back into position, and re-weld it , but I would definitely NOT try banging it back into position with a sledge hammer for fear of causing additional damage.
Kev