Yes, you're right. I remember reading that the maid said he came in for one or two minutes around 10 on the 23rd. And, I can't remember the details, but I got the impression that that tidbit was not lost on the defense.
But there's still a question about the Martha show on the 24th. Supposedly she DID make a brief mention of meringue. WHEN in the show did she say it? If it was after 9:30, and if Scott claims to have seen it, then he has just contradicted his own story that he left the house at 9:30 that day.
For all I know, Martha might mention meringue in every one of her shows! I've never watched the show!
I guess we wait for the timeline to play itself out.