Hi Greg,
Yes, @Tridge opened this thread in May 2016 Tiltrotor support for plane
We liked your CL_84.
It is actually very simple: At a safe altitude you switch to QHOVER. When the airplane stands still, you switch directly to manual mode. This stops the rear engine immediately and the backward somersault begins. Then just switch to FBWA or QHOVER and Arduplane straightens the plane safely.
The fuselage gets a place of honor next to the workbench 
Cheers!