I'll ditto Gene's comment - "No Flapperons!" It'll just get you into trouble.

That said, the "tip stall" you experienced on takeoff was not a tip stall, but a torque roll. Taking off with no enough speed will cause the prop's torque to roll the plane in the opposit direction. It is RARE that you can recover from this, so count your blessings.

In the future, get more ground speed before liftoff.

Congrats!