Had an electrical issue and had a single speed break deploy on takeoff. When I do the controls free and correct the speed break deployed on one side due to the placement of the switch on the yoke. The break that deployed was on the down aileron side and I was looking for an up aileron on the other wing so didn't see it since the break was stowed on the wing under observation. After I rotated, really hard yaw into the break... though I got slammed with a X-wind gust, but it persisted and stabilized...didn't feel like a gust. Immediately lowered the nose to keep airspeed and saw the single break out and stowed it. I have now modified my pre-takeoff list to check both breaks. Sent units back to precise flight for overhaul (obviously). When landing with them out with close to no-wind, I can land about on the numbers and stop at the indicated spot to make the first turnoff. It was experimental, 80MPH over the fence and heavier breaking. You have to drag it in under power, so I thing this would probably be something to think about to limit ground contact energy in making an off-field landing. Wouldn't & don't do it or recommend it for normal course of ops , but was good to know what the plane will do.