I was wondering though, when the 'quest' 'Dont step on the bear' showed up.. was it actually a quest you could do anything with?
No. It's just a warning that you're about to take an irreversible step as far as main plot/faction goes. If you ignore it & keep going, you get a Failed Quest message. Otherwise IIRC it stays there, probably as a constant reminder.
@DarkZerker - Actions & consequences. It's what the game is about. The game is, imo, pretty clear that the NCR & Legion are vital enemies. It's possible there's a console command but messing with such things can be tricky/cause problems themselves. Do a search on the fallout wiki for 'console commands', maybe you'll find something. Or reload an earlier save.