So....I was running heroic Utgarde Keep today, and the first mangle I attempted to put on the first boss (level 82, mind you) was dodged.....I'm at 26 expertise (6.5%) and the only thing I can think of is that it must have been a glitch. I can't remember whether my attack was from in front or from behind, but I'm sure it was a dodge and not a parry (confirmed by recount). As far as I know, mob dodge is the same in front as it is from behind, so I just can't figure out what would have caused this. I wasn't dodged at any other point in the entire instance or in my over 2000 attacks on the heroic training dummy (attacking from the front just in case that affected it).
Any ideas on how I was dodged?