To be fair, I imagine that if there was any multiaccounting going on at Gingers end he would have been a part of the big banwave we just experienced. Simply because banning a prominent merc for it at the same time as all these UIF folks would have been a great way for the devs to show that they ain't "pro or anti UIF", they're just cleaning up the game.
But seeing as that hasn't happened, especially given the amount of fuss that we've seen about ginger/kittya in the past, says to me that there's nothing going on there.
*2 cents*