I tried to so some searching around and couldn't find a good answer already, so here goes.
Currently I have 300 reputation on the Japanese.SE site and my Area 51 commitment is showing that it is still unfulfilled. Since I'm at my maximum number of commitments I'd like to free one up for some of the sites that might be upcoming in the near future; however, the Japanese site is keeping me from doing that. At this point in time my Japanese studies are on the back burner (life is what happens while you are studying :/) and I'm unlikely to be much of a help on the site. Is there a way to free up the commitment so I can use it elsewhere where I may be more of a help?