Nobody "deserves" to be bitten by the prop. Sorry to hear about your accident. Hopefully the damage will not be permanent.

I work as a safety inspector for the Department of Energy, and I can honestly say that most accidents and injuries occur when people get so used to doing things one way without accident, that they don't recognize if a change occurs that makes the situation hazardous. In your case, the practice of working on your plane on a bench with the battery connected. I would submit that anytime the power is connected to an electric plane, the plane should be positively restrained, much the way a glow igniter should never be attached to a glow plane unless the plane is positively restrained. This simple practice is often overlooked or ignored.

At our club, we built the Meroke field tables so every plane is restrained when its on the bench. Pilots can't override it, and it makes it easy.

Good Luck!
Brad