I do not have experience treating my children with Abilify, but I work in Special Education. A young man with Autism/OCD just had a very rough time going on and then off Abilify. It cut his OC and "stemming" only slightly, tics increased a fair bit, and his mood was SHOT! He was not changing meds.
I do have a child on clonidine. We have not removed this med and she is low-dose, so I'm not very familiar. I do know that the clonidine is a big help for her, and am even afraid to remove her low dose quickly if we had to!