That's some heavy shit, I read all of it, and personally, I think you had a bad shwag experience (I don't know if that applies to just shwag or weed in general), but that's what I've heard it called. It happens once to every pothead at some point, where you just completely flip shit, and stuff like that happens; elevated heart rate, paranoia, crazy shit of that sort...'cause it doesn't sound intense enough to be laced with PCP...wish I could help ya more though Good luck finding out what it was. Maybe lay off the pot for a while.