I thought I'd put this short video together to show how a rogue can get through stealth detecting mobs. The idea is to get as much distance between you and the particular mob(s) as possible in the direction you want to be going using sprint and evasion if necessary. In this case, I'm in heroic slave pens on my way to grab the quest "The Cudgel of Kar'desh" which is received from a caged NPC a bit further in the instance.
Probably common knowledge amongst a lot of rogues, but I've seen quite a few that didn't know this little trick. Enjoy.
***Note***: The video is compressed with H.264/AAC for best quality/compression. So if you can't play it back, go grab VLC player or ffdshow. You will still need a good computer play it properly.
Added XviD version + mirrors. This should fix anyone's playback problems if they can't handle the H264 version..