Then you would love the novel Shatterpoint, since you love the prequels and pretentiousness.
Mace just takes his head off, in the theater there was no sound or sparks indicating his jetpack had failed.
Lucas added them on the dvd. The reek creature damages his jetpack so he cannot escape.
Kind of reminds me of the jedi radio drama han says to boba "I'm gonna rip your helmet off with your head inside!"