I tend to brake almost exclusively with my right hand. This usually means that the V-brakes for my left hand (rear) build up grime over time. Then when I come to use the brakes when I do need to stop more abruptly, it works fine, but it doesn't release properly afterwards, and I'll need to reach behind me and adjust the brakes again to get them out of their jammed or half jammed position. Getting them unjammed is sometimes more easily achieved by buying a whole new brake rather than working them into a 'released' state. This does not happen on the front so I can only assume it's due to the relative disuse of my rear brake.
What strategies can I use to prevent this from happening? I know it's not an issue with the brakes being balanced, and it's happened on more than one bike.