We've been sent some Transformers spoilers that we just had to share. Don't look unless you like this kind of stuff.
Thanks go to Woolfman for the info:
It happens that they were in the classroom scene that was being shot yesterday with Rainn Wilson. The shoot was to cover two separate days within the movie, the first day of classes for Sam, and the second day of class.
On the first day of class, Sam goes crazy just before getting to class for some reason. It seems there is some object that he was exposed to that affected him, our guess is the splinter from the cube. Anyways, Rainn Wilson asks the class to turn to the first page of the text book (which, apparently, Rainn Wilson’s character is the professor of the class AND the writer of the Astronomy text book that they are using in class). Wilson’s character’s name is Professor Colon (pronounced: koh - lawn). Everyone except Sam turns to the first page. Sam, instead, read the entire book in 5 seconds by just flipping through it, then starts telling Wilson’s character about what parts of his book are wrong. He also starts talking about how Einstein was wrong. Sam gets up from his seat and goes up to the chalk board and starts writing a lot of weird symbols on the chalk board (probably Cryptonian). Then he starts asking why nobody understands and then he leaves class. On the second day of class, he apparently returns, but acts less crazy.
The reason we suspect that it is an object he touches that makes him crazy is because there was a scene shot earlier where he was on the phone Fox’s character Mikaela, and he was asking her if she had “it” and then told her to make sure she doesn’t touch “it”. Our guess is the “splinter” (left over piece of the Allspark Cube), but it could be something else, of course.
Oh, and the last scene that was filmed on Wednesday evening was of Sam arriving to class while riding the red motorcycle that people have seen in pictures. I don’t think that proves whether or not it is a Transformer or just a motorcycle, but it could be worthwhile information in the future.
My guess is that it would be a piece of the All Spark that Sam kept after thrusting it into Megatron. That would explain why Optimus Prime thought there was nothing left of the All Spark at the end of the flick.