That makes sense. As I stated before I figured there had to be a limit to the number of cameras. I don't think that Amanda and Kelly lied (Alex did mention having peas when in the house talking to Kenny and Co. but said he didn't know what to do with them-this is before the puree was made). I just found it funny that with all of the shopping and prep they do we didn't see the peas. The only scene I remember of Alex with peas in a pan was when it was already a puree and he was heating it to add to his dish.
This is why I was glad that Tiffany and Angelo let it die out. It is one of those things that will forever remain a mystery, and while the fans can speculate forever it wouldn't be fair to Alex if people who were there continued to call Alex out. I've never been an Alex fan but he didn't come off in the best light on this show even without peagate.