Pirouettes

It's been bothering me to the point where I literally dreamed about it last night.
Last summer, I took dance classes in New York and all of a sudden, bam, I could do pirouettes. Singles, doubles, triples, I could nail them every time, ending exactly where I should end, staying up in a passe. I started off the school year nailing the turns just like that, every single time. Then, all of a sudden, I just...forgot how.
So, the last Tuesday I was in China, I took a ballet class. At the barre, of course, I sucked. All the other girls had great turnouts and great extensions and I was just rusty and overall unimpressive. Then, when we went across the floor doing pirouettes, all of a sudden, bam, yet again. Every single time, single, double or triple, abolutely on point, I could feel myself absolutely on center for both left and right pirouettes.
And now, I can't do them anymore. Again. I strongly suspect it has something to do with taking ballet classes (pulling up, elongating the spine, keeping the hips aligned, all that stuff we ignore in jazz) except that, o, of course, the selfish school of Drama won't open any classes for people who aren't drama majors. So, I'm left looking at ballet classes that are off campus and horrendously expensive. Except that the schools around CMU only seem to offer ballet on Tuesday which is when I have to teach statics recitation. Curses!