Am returning to Hidden Valley bunker to deliver the stuff BoS needs to repair their filtration system. upon entering the bunker all BoS are hostile and start blasting away. I'm not wearing faction items of any kind, never gave up their position, etc, and everything was cool when I went to search the vaults.I've stripped down before entering, etc. What the eff?

I haven't experienced more than the normal amount of glitchiness, however I can't drop Motor Runner's helmet.

Fixed this. Saw in different post a suggestion to equip/unequip faction gear (even if you already did this). It worked. I had taken NCR armor and worn it at some time before the BoS went hostile and even though I was no longer wearing it (didn't even have it in current inventory!), they went hostile. Had to go back to my room, get the armor, wear it, get the message that I was now dressed as a member of the NCR, then immediately take it off, and finally go back to BoS. After that they were no longer hostile.

Another fun glitch.