I have first hand knowledge of a fatality using this procedure. It is very dangerous. I have seated many beads off road and have always been able to re seat the bead without the use of ether. Sometimes a ratchet strap is required but most times all you have to do is get the tire and rim off the ground and air up. A little water around the bead works to lubricate and seal. My advice is don't do it.
Todd
