#1
The other day I was moving around and I set my guitar facedown (accident) and the A string popped loose. No big deal. So I get home and I fix the string. For some reason now the action in all messed up. Every string is at a different action, and it is CONSTANTLY going out of tune. The locking nut isn't working too well, and if I twist the tuning key enough it actually works.

What's going on with it? It usually sounds great and plays smooth without EVER going out of tune...
Gear

Jackson DKM2 Dinky, Seymour Duncan Pickups, Jackson Patented FLoyd Rose, Maple Neck
Line6 Spider III, Line6 FBV footboard, BOSS SuperShifter PS-5
Tascam US-122, ZOOM Rythmtrak RT-123, Zoom MRS-4 MultiTrak
Drumsite, Audacity
#2
I'm not really sure what would force the action to become so screwy. Regardless of the cause, your best bet is to get it to a guitar shop and have it looked at.
#3
Thanks for the reply, I had my dad come in and check it out. He says the coating on the strings is really screwing it up. He also said that we put that nuts on sideways.
Gear

Jackson DKM2 Dinky, Seymour Duncan Pickups, Jackson Patented FLoyd Rose, Maple Neck
Line6 Spider III, Line6 FBV footboard, BOSS SuperShifter PS-5
Tascam US-122, ZOOM Rythmtrak RT-123, Zoom MRS-4 MultiTrak
Drumsite, Audacity