From the SuperHeroHype forums,
User "pacmaster3000" found a tweet from a person claiming to be visiting the set of 'Spiderman 4' on March 6th:
"Yay!! I just found out we're going to the Spiderman 4 set on Tuesday!! Yippy!!"
And on March 8th:
"Just saw the set! So coooool! saw the sewer scene & lockers"
After searching through their Tumblr account, I uncovered even more information about this supposed "sewer scene".
She states:
"From visiting Sony Studios. It was really awesome! Watching everyone get around on their bicycles, the buildings, stages, and of course the sets watching how they’re made. I got to walked through the lockers and sewer set from Spiderman 4. I saw the classroom and camera crew. At first I thought maybe Andrew was in the classroom, but he wasn’t . Darn! Maybe next time?"
A sewer scene would be something truly beautiful to watch. If done correctly, the atmosphere and dialogue could properly convey the bloodlust and violent nature of the Lizard, and adequately show the danger that Peter Parker is in.