RE: staling wingtips
Your lucky to have saved the airplane from the death sprial....usually once the airplane has rolled over and the pilot gives lots of elevator it's done....elevator only made the sprail worse...somewhere along the line you neutraled the elevator input, stoped the roll and then pulled up using elevator again.....
My guess is that you stalled the wing period....you were in a high angle of bank then pulled elevator.....without rudder input I bet....You had a high speed stall
The Sky Raider is a gentle flyer I have never heard of it having a problem with tip stalls....
Good job saving the airplane