"If the towplane loses power, the sailplane pilot should immediately
release, maneuver to the right of the towplane, and stop as quickly as
possible. *The tow pilot can then discontinue the takeoff and maneuver
to the left side of the runway."

This is exactly what I did many years ago in the same situation. I
was unable to stop my ballasted open-class ship before reaching the
towplane and coasted past it on the right. I recall seeing the
propeller stop abruptly as I was just about airborne. He pulled to
the left and I went right - no problem.

Mike