I have Optimus disabled. I think I have it sorted out. Turns out, it wasn't really shutting down but trying to go into sleep/hibernate all the time. I turned Speedstep back on and that seems to resolve that. Everything is now turned on... all cores, hyperthread, turbo, speedstep...
I now have run into a second issue. I can't seem to get two external displays going with my E-Port dock. I can have one external and the built in display going but as soon as I plug in a second external, it all goes blank until I unplug one. Kind of a bummer, took me forever to get both displays working with ML10.8