The headphone jack is kept in place by plastic posts internally. It's not soldered to the board, but instead "floats" on pads on the board. The whole jack removes as a single unit by just opening the device. Worst case you broke the little feet it uses to keep stable. You may be able to get a new one from a parts site, but if its still working, you're pretty much good. Just don't jiggle it too much, or it may break the last foot it has and slide into the device.