It doesn’t specifically have to be that team but it’s certainly odd, yeah. I was going to be an execution candidate today.
The obvious answer is “to frame a starpass”, but there’s no evidence to imply such an ability exists so the evil team shouldn’t expect people to believe it. Perhaps the Demon wasn’t coordinated with their team, or they made an error, or they have an ability which triggers on Outsider deaths (odd because then you should’ve died), or something like that. Apparently I was Someone’s Phylactery claim, but that shouldn’t be related.
I’m assuming it was just a bad kill on the Demon’s behalf, thinking I’d be harder to misexecute than I would be.