Honestly, all I see is macaroni. That third shape on the top throws me right off.
Pretty sure that that's for the X button.
Update: Well, I've tried it a bunch of times in a variety of different fashions (backwards, opposite, up and down, left to right, right to left, etc), but so far nothing has happened. I'm starting to think that this code doesn't do anything at all. And what Insomniac meant by "spoil the fun" was spoiling the fun of trying to figure out what the code does.
Okay, now is it just me, or are the final two at the bottom right tilted? The other ones representing down are going, well…down. But those last two just seem kind of off to me. I dunno, maybe I'm just going a bit insane because I can't crack this code for the life of me.