420 J2 is a low-carbon stainless, which means it likely won't be hard enough, therefore brittle enough, to be broken easily. Such steels are formulated for flexibility and corrosion resistance, such as a fillet knife, for example. That should work in your favor, in bending the tip straight again. There's no harm in being careful in straightening it, but I don't think it's likely to break in doing so.
You might consider posting a picture of the bent tip on the blade, if you can. You'll gather more good advice from experts here on how to fix it, with a clear picture of how bad the bend is.