I don't believe Luke has been shown to use Pyrokinesis, but Leia said that he taught her how to do it. Though I doubt he knew how to do it during ROTJ.
Beni, to your knowledge, has luke ever used Pyrokenisis?
Could he bend the fire in the traps, or set it alight to his whim?
No one has mentioned this, but Lukes greatest strength is he can use force powers that he has never studied in depth, just knows its possible and makes it happen...
If he can, this game is over.