I don't really know how to explain what just happened...
I was doing jobs for Delvin and Vex, I completed them & returned to the ragged flagon.
But when I got there, everybody in the Thieves Guild pulled out their weapons and left.
There was no dragons outside or anything, this should not have happened, I cannot interact with them either. I've tried waiting, loading my last save(s) and reinstalling (again) didn't fix it.
...Help?

Also, I am NOT trolling, yes, this actually happened, and there seems to be no fix.

Any special circumstances affecting your character? Any Bounties? Can you fast travel without the message popping "guards pursuing you"? Are you a stage 4 vampire? Anything you can think of that might make them run away. Did you kill Dirge?(I killed Dirge, suddenly everyone was hostile towards me)

No, none of those things, I don't have a bounty and I've never been a vampire, I cannot fast travel because 'enemies are nearby' even though there isn't, no red dots on the compass either. I think it's time I just sell Skyrim, or just burn it and dance upon the ashes