Read Shock Dynamics
Gary, have you ever read Fischer's site, ? I've been discussing it for a few years now, starting with Breakthrough on How Continents Divided.
You say Charles sounds like the mainstream. That shows how superficially you read his stuff. We don't accept subduction, nor does Fischer. The idea that the Moho layer is a nearly frictionless plasma was first mentioned by a Velikovskian catastrophist, Peter James, of SIS Review, as far as I know. So it's compatible with EU theory. Cardona accepts that model and agrees that the continents slid over the Moho layer. But he got fooled by the magnetic striping on the seafloors and thinks that periodic Saturn flares are what caused the continents to move apart relatively gradually.
Cardona correctly agrees that the continents across the Atlantic were once joined together as is shown by similar rock strata and fossils etc on both coasts. That disproves Wal Thornhill's hypothesis of ED having carved out the Atlantic.
I've covered this earlier, but the East Pacific Rise disproves expansion. Expansion would have left the Rise in the middle of the Pacific, instead of near South America and under much of North America. (Some expansion may have occurred, such as via Earth changing shape, or a large impactor penetrating deep into the Earth, but it's likely to have been very limited. Cardona thinks Earth expanded by receiving detritus periodically from Saturn.)
Fischer's Shock Dynamics model explains that the Americas broke off of the supercontinent and slid on the Moho layer and then partly over the pre-existing (from an earlier impact) East Pacific Rise, which built up the Rockies and the higher terrain of the West. Fischer doesn't say it, but the great flood likely occurred when the continents moved rapidly apart. The Americas, Australia and part of Antarctica moved the farthest and likely flooded the most. Africa and Eurasia moved the least, except for India. By the way, I agree now that most of what is considered effects of glaciation actually seems to be evidence of the great flood. Fischer's site has abundant proof of an impact as the cause of the splitting of the continents.
In Charles' model, the powerful EM forces are what collapsed the solar system's Giant Molecular Cloud electrically into the Sun, planets and debris, the Sun and planets being held together by electric double layers, which release or re-store energy at the DL boundaries due to electrical tidal forces between solar system bodies.