So I dropped deep wounds and traded it for improved disarm lately, and I've been really happy with it.
Originally I was mostly running heroics with my warrior, so I was speccing accordingly - there is tons of stuff that you can disarm in there, and faster clears are always good.
However, I'm really impressed with it in a raiding environment as well. I searched the forums and found a couple reports that the +10% damage is bugged, but unless I have amazing luck, the 10% bonus to my own damage is clearly there. I have NOT verified that it applies to group mates.
So far in ToC, the first northrend beast is disarmable, and it appears that all the faction champions are disarmable. I use disarm every cooldown on thorim (both gauntlet and arena), as well as the Vezax trash.
Personally, I've had no threat problems as of late, as long as I'm keeping vigilance assigned appropriately, so I had some wiggle room. My personal dps is not that significant in the grand scheme of things, so I didn't mind dropping deep wounds.
Just thought I'd share my results - I'm very impressed with improved disarm and plan on raiding with it for a while.
Edit: This probably should have been in the mechanics forum. If a friendly moderator wants to move it for me, I'd appreciate it.

