I was playing another Insanity playthrough just now on the final mission, right before you enter the Citadel, in that annoying slow-motion sequence. After an ongoing battle against my old nemesis I finally decided that I was tired of dying. So I shouted at my Kinect sensor to use Stasis on him, and it worked. Froze him good... >:} heh
I'm not sure if this is old news but if you're ever having trouble against Marauder Shields and you have Kinect, give it a try. Any command will work. For those who don't know, "Marauder Shields" is the name of that last Marauder who jumps out at you at
the end. Yeah, that one.