Rule question

[UmpireErnie]

The key here is that the "CR-to-be" who has entered the feild must actually interfere (in the judgement of the umpire, of course) with an opportunity to make an out. Her wrongful presence on the feild does not automatically constitute interference, nor would it be a reason to kill the play until the umpire judged that interference had taken place.

The PU may not have been asleep after all, he/she may just not have believed that the "CR-to-be" caused F2 to hold up her throw. Can argue that all day but it is a judgement call all the way.