One of my clients right now is recovering from it. Biggest thing to keep in mind is that frequency of the specific piriformis stretches and rolls is key. He suffered for a while with only moderate success in getting over it until he finally took my damn advice and did rolling and stretching at least 2x a day everyday. A week later he was 70% better, week after 95%.
I am assuming the chiro gave you specific stretches to hit the piriformis. Follow those and the apecifi foam rolling exercises. Btw, that hurts like a bitch when you find the hot spot.
My client noticed the most pain during deadlifts (conventional) & free squatting. Box squats helped him keep squatting with less discomfort, but depends on your stance I think. He squats narrow.
I would suggest piriformis stretches and rolls between sets of deadlifts and squats. Those help a lot too, to keep the damn thing from getting too extremely tight while training.