A bit of a problem...
While Saruman had gone upstairs to get some rest, Grima had been driving Orth-Tank steadily along.
He soon grew tired of this and began to hum some music to himself, not paying any attention to what the tower was doing. Eventually, he drifted off to sleep.
This didn't last long, however, as the tower came to a sudden stop with a loud SSSSQQQQUUUUIIIISSSSHHH. A huge spiderweb held them fast.
Saruman charged downstairs to where Grima was still sleeping on the job and woke him up by bellowing the usual set of curses, insults, and threats at him. Grima, as usual, responded with the best "Duh?" he could muster.
"Well," said the wizard, "no thanks to your lazyness, we're stuck in a gigantic web. I don't suppose you have any ideas as to how to get us OUT of what you've gotten us into?"
"I, uh, might," Grima responded, "but, um, uh, it would be a little, uhhhhh"
"WHAT?!" Saruman yellled.
"I was going to suggest you get your lawyer to sue the spider for being a hazard to navigation, but I thought it would be a little too evil even for us." finished Grima.