Time for Ejection Seat Upgrade?
There's much more capable ejection seats available and a number of videos showing low level saves.
It's common for non pilots to ride in the Tutors. A command pilot ejection initiation should eject both.
The Kamloops weather observations seem to have been embargoed. With diminished airspeed and thrust deficiency at the top of the zoom added to local topography, windshear could be behind the apparent loss of control. I have seen how quickly you can end up inverted on a steep downline.