His powers work from warping space, it's basically kinda portal stuff, though he can wrap the target in a bubble and teleport that if he wants. Generally though he tends to think with portals and math trajectories etc when using that aspect of his power.<br/><br/>As for your question... His senses basically give him spatial awareness around him, as a sorta sixth sense. I've never pondered if he could abort a bum teleport because he sorta does it as an instant action kinda thing. If a teleport mishap happened he'd probably be stuck with it, though seeing as his spatial awareness covers his max teleport rank (2.5 miles, basically to the horizon of his sight) he'd likely lose them but if he concentrated, he could likely find where they went. He wouldn't be able to remote see them or anything, he'd just end up sorta 'knowing' they were at X location. It's a weird sorta ESP thing, at least as far as his Senses work.