I assume that happened at the end banking?
I was just looking at the scheduling a few days ago and see that all of their classes are sold out and no new one's scheduled. I'd like to give it a try myself, just for fun. Years ago I went a few times with the Brampton Cycling club to Montreal where we rented the Olympic velodrome for the afternoon on Sat and Sun.
The Milton Velodrome is going to have an open house on Monday for family day.