Animation sequences are getting mixed up

I created several DSQs: root, run, cheer. The cheer sequence only involves raising and dropping one arm repeatedly (like pumping a fist). Whenever I cause my player to do the cheer sequence and tell him to stop, his arm stays up and when he walks, he walks with his arm frozen above his head. After a while, he will eventually drop his arm and walk normally. But then, I'll command him to cheer again and sometimes he will pump his fist forward and backwards instead of up and down. After a while of experimenting in order to fix this, I think I broke the skeleton in several places. Sometimes, he will arbitrarily switch between one animation sequence and another. What am I doing wrong?

I seriously need help. I have read over 100 posts on animation in the forums, read every place about animation in both of Ken Finney's books, and the Game Programmer's Guide to Torque. I have tried for about 15 hours to fix these sequences. (by the way, I have been using Milkshape 3d and using the latest version of the dts/dsq exporter) My phone number is 757-488-4147 if you would like to call me. Thanks!