This is why you don't use Eye of Ra next to important things. Edit: Screw spatial instability potions and screw the Lutefisk god. Edit 2: I don't suppose anyone has a wizardland code with a spatial instability potion in it that they're willing to share.
Go down (or up) stairs and then back up (or down) until you find a set that leads to the other side of that gap? But yeah, levers in general probably shouldn't be pushable.
Can't do that, the lever is my only way off of this tiny island. The instability potion moved me 2 spaces, so that didn't help either. My only hope is a wizardland with another potion.
Ooooh, yeah, I failed to notice that your island didn't connect to anything. D: I unfortunately don't know of any offhand; have you perused the Wizardlands With Good Loot thread?
You could start the game in debug mode (add "-debug-flag" to launch options) and then press P to go up stairs and p to go back down to your level.