Foxwoods Floor Decision: Thumbs up or thumbs down?

[FoxwoodsFiend]

A friend asked me to post this. Playing NL, she moved all in on the turn. She got one caller. There were two people behind, one of which folded. The next guy was apparently clearly going to fold, but the dealer dealt the turn right before he could. In other words, his hand was going towards the muck as the turn was exposed, but he didn't actually muck until afterwards.
The floor ruled that the turn be dealt back into the deck after the river is dealt as the turn. The deck was then shuffled and a new river was dealt.
So, given that the only guy left to act was in the process of folding when the turn got exposed, should the turn have been allowed to stand?