When DS pirouettes on floor, turns on high bar, and circles, he goes counter clockwise. Like ZJsMom's guy, his left arm stays on the bar for a blind, and his vault catch rotates counter clockwise as well.
Given the directions they twist, DS and DD should not do mushroom circles in the same direction, but they do.
Hopefully one of the coaches will check in, Sasha, but I'd think a vault and floor hurdle should be done the same way. DS had one vault this season where he didn't get a chance to warm up the event due to the chaos of the warmup situation, and he ended up hurdling off the wrong foot. He made it, but thank goodness it was only a yami half and not something death defying.