I found this little bug when tanking Al'akir 25 heroic, not game breaking but it's useful for avoiding damage when things are messy.
If you stand right in the spot where you lose melee range with Al'akir, he won't hit you or cast electrocute, the try I noticed this after 6 seconds he dropped aggro (not lost it but he changed target) but I didn't hit him, I don't know if you lose aggro if you hit him when you're on the spot I've to test it.
SS of the spot (Works in every spot as long as you're exactly at the limit of melee range)
Uploaded with ImageShack.us
As you can see the boss has a few stacks of my seal and I can only proc them with avenger's shield and judgment without being on range, so I was 15 seconds on combat and my life didn't drop (didn't heal neither)
The boss has no target so I think that I lost aggro there but I'm not sure.
Whatever you can use this like 3-4 seconds to avoid some damage if your healer got caught in Tornado or Wind Bursted out of the platform.