Were UA skills altered in Chaos?

Nope, they were not changed/touched/altered in anyway.
SoulDriver is still OPed.

Wait, you sure? O_o
http://spadow.wordpress.com/2010/11/17/k...s-arrived/

Warrior

- Damage of Mihail’s Soul Driver has been decreased from 250% to 180% and the amount of monsters Mihail’s Soul Driver can attack has been increased from 5 to 6

Soul Master (3rd Job)

- Damage of Soul Driver has been decreased from 250% to 180% and the amount of monsters Soul Driver can attack has been decreased from 8 to 6

Are you telling me this KMST change actually didn't go through, but the Adventurer / Hero / Resistance changes did?