Dude, if its a shade that teleports, the version you play are bugged or hacked. Shades cannot possibly teleport to another selection area. Maybe the range of the spell was long enough to pick him.
And for the lvl 30 thing, he could just have killed a strong creature some times and get to lvl 30, there is no way to cheat levels without killing in this game (except buying tomes, but that doesnt count as a cheat).