I know a Ginger Beer who can open Dash 8 locks by elbowing them really hard in the right spot, pops the locking mechanism,seen it myself.
As for boarding passes and ice cream sticks opening the doors, it is possible. I will try it on the late shift, plenty of time spare. However for the sake of OHS safety I would recomend that all paddle pop sticks be licked thoroughly clean, gloves be worn as well as a high vis vest, knee's bent and a second person used to ensure no excessive limb movements occur. Better to err on the side of safety don't you think ??