Seems odd to me. I've launched a bunch of boats and driven lots of manual tranny vehicles. I've never used reverse to back down a boat ramp. Did his foot slip off the clutch at the same time his other foot slipped off the accelerator while in reverse for a procedure that most folks use neutral to let the weight of the boat and truck ease back into the water while holding the brake? When I owned my '03 with the driveline vibration that DC couldn't and wouldn't fix for two years and 44k miles, I thought about drowning it many times as I drove past the boat ramps. I'm not making accusations, I've just been reminded of what I wanted to do with my problem truck.