Another "hack" us Jews use very often is a timer. We have a timer hooked up to an outlet, and plug things into the timer, so you can set certain times to allow the electricity through, and other times not to.
If the logic is that God didn't want a fire lit, surely that is because he didn't want the fire, not that he didn't want someone lighting it.
Isn't it all a little bit like a scaled down, less immoral, version of saying "No, I didn't kill him, I just pushed him into the ocean - blame the water"?
Things like the switch in this article seems really silly though. Of course having a gentile to push elevator buttons for you seems silly to me as well.
Anyway - omnipotent and omniscient God is logical contradiction already, either logic don't work on God, or it's all bullshit. So religion doesn't have to be logical.