You're right Notso, the idea just popped like that.
But thinking about it a bit more, would it be feasable to retract the gear to an "Emergency" mechanical stop position, i.e. not fully retracted but just enough to keep the engines from hitting the ground (and power wouldn't be an issue here because it could use a hyd dump valve)? or the height from the base of the engine casings to the ground won't be that much of a help on this case?
Another different question is: even with the distance reduced, how much time would be saved? 10 secs out of 90?