I fucked my C/N off in 96' at the pit in venice, doing bend over rows w/300 lbs, it was summer and about 100 degrees, anyway I began to passout and locked up mid pull and fell forward, dont know how I fucked that nerve off but I tell you I could not fuck/sleep/eat/ I was in bad shape...
Too shorton this story I will just say that swimming HARD and as fast as I could for as long as I could hold my breath UNDERWATER
fixed it, I have since agravated it a few time doing goodmornings or stifflegs and I hit the pool for about an hr. and all is well, give it a try...
Good luck,
Peace