I'm not trying to fit any part of this to anything. My quest is always to find out the truth, the whole truth, and nothing but the truth, of what happened to these little victims - no matter what that may be. I do my very best to be objective in that quest.
I do understand that this is merely a search warrant affidavit, and how the standard of proof differs from a trial.
All that being said, I see no reason for the LEO to have mentioned in the affidavit that there was a party unless he'd received information that convinced him that there was.
I see no signs that Shawn and Billie are being railroaded.
If the LEO was mistaken, or encounters additional info that changes his mind, I'm sure we'll eventually find that out.
For now, I think there was a party.
We can agree to disagree.