I really enjoy playing with my Wii, but I don’t think I would dispose of a bomb with it.
The Wii remote is functional for the task of bomb removal, but the Wii remote has low resolution compared to other commercially available sensors.
For further info from the Carnegie Mellon grad student who first popularized using the Wii remote for tasks outside of the Wii gaming system check out his webpage and videos: http://www.cs.cmu.edu/~johnny/projects/wii/