I think I take everything that has not been verified with a block of salt..I don't think he had time to go to Sharon's on the 24th and have never before heard it said that he did...The water running/shower running part doesn't concern me..the timing of his visit to Sharon's does.
He didn't even want to TALK to the Rocha's on the 24th!! He sure didn't go there.
I seem to recall reading somewhere that he took Amy over to Sharon's at the end of searching that evening. He could have used the bathroom before he went home.
After that, he went with Brocchini to give his statement.
I could be wrong on this, correct me, someone, if you have other info, but that's how I meshed this info when I heard it.
Pinz