It also sounds a little like sciatica, which I was told is part of AS. so an exercise to relieve this is to lie on your back and cross right leg over left, resting rt. foot on left knee. then pull left knee toward chest and hold stretch for 30 seconds. you should feel this in your whole glute and hip area. repeat on the other leg. this really helped me through a period of sciatica, I too had to hit the floor at times. good luck.
-Donette
