It's interesting that the Watchtower Society hasn't had this video pulled from Youtube. I have a few ideas of why this might be.
1. They may be waiting for the excitement to die down to try to prevent their actions from feeding into the viral effect. Unfortunately for them, this could take a while for this video.
2. It could be indecision. The Governing Body might be starting to realize that they don't know how to tame the Internet monster. They may be hoping that the problem will go away or the Governing Body might be unable to reach a two thirds majority decision.
3. They might be afraid of making this video more newsworthy. For now, it would be difficult for the mainstream media to cover this story without looking like they are making fun of either a religion or deaf people. However, if the Watchtower Society pulls a video that they put on the Internet in the first place, it could make for an interesting news story.
4. They might be afraid of Anonymous. They probably remember when Scientology kept trying to take down that infamous Tom Cruise video and it just fed into the publicity of the Anonymous operation. This resulted in worldwide protests and a PR disaster that dwarfed the current embarrassment of this video. There was some talk about this when the Watchtower Society was taking down the Sparlock videos, but those couldn't compare to that Tom Cruise video. This deaf masturbation video might have enough viral power to to cause a similar amount of trouble.