I can relate to everything your saying about Aripiprazole / Abilify.
It's a very peculiar drug. It has such complex effects...it really is unlike any other anti-psychotic.
For me it produced the same side effects you describe. It also caused a lot of anxiety. At the same time however, it helped me with issues like motivation and eye contact.
...A weird drug though.
My advice would be not to just stop taking it. You could have severe rebound problems. You're best off going back to your doctor.
Having said this, I (think) that I came down from 30mg to 10mg, and then from 10mg, I just stopped. I was taking another anti-psychotic (amisulpride) at the time though....I didn't have any sort of major crisis.