RE: What is this 3D move called/done
Well, if its done right its not really a 1/2 bunt its a 1/2 waterfall. There is zero radius to the push over and then the plane sinks into an inverted elevator, immediately transitioning to whatever manuever you like. I like to transition into a rolling harrier. The plane has to be setup PERFECT to get it just right and its tricky to get over and inverted and hold it there without stalling since you have to be near power off or it will continue to waterfall.
Mine actually does look more like a 1/2 bunt because I cannot get my 37% Ultimate to pivot over the wingtube on the 1st rotation with reduced power. Being inverted at full deflection with almost zero airspeed is a very sticky place to be, you better know what you are doing or you will stall it right into the ground if you add too much power too fast or not enough power to make it fly.