I noticed that the bumper rips off, but not until about my fourth ride. Always heard JJJ say that but never made the connection with the bumper. Awesome.
I don't know about Doc Ock "losing his balance" though. I'm almost positive you can see Spidey web him out of there. That with the combination of the Scoop in reverse makes the bumper rip off.
It wasn't until about my sixth or seventh ride until I understood the part right after this scene. The weird wobbly part, but then I saw the arrow that read "To 12th St." (I think that's what it says) The Scoop goes up some stairs to "ground level."