On Sunday, March 20, 2016 at 8:29:34 AM UTC-7, Jonathan St. Cloud wrote:
...This of course was possible due to the lift generated by the F-15 fuselage.

I think that the most important factor was that the F-15 has elevons that deflect differentially as a roll control. The elevon on the side with the missing wing was basically carrying half the airplane.

Think of it this way: If you pitched a one-winged F-15 up enough to get any substantial amount of fuselage lift, the remaining wing would produce enough lift roll it like a pinwheel.

Thanks, Bob K.