Ken,
I have not seen a 'slip on' toothbar but I would guess if it slips on it will slip off also. 3RRL did a great set of instructions, I did not put in the welded backer plate things ad I have not bought a welder yet. I just drilled the 3/4" holes and all has been good.
I have only removed the toothbar a few times, leveling gravel prior to pouring concrete, and some dirt leveling in the so called yard, to remove ruts.
A toothbar is a simple addition that if you have 20 hours of tractor time in and then put on your toothbar you will wonder why you waited so long to add the tooth bar.
steve