There was a story on Ch. 4 in Boston last night that Jr. was choking Tigger from behind. The union is backing the worker saying there was foul play.
The footage I have seen backs this story. If Jr. wasn't doing anything, when Tigger turned, his arm would have stayed where it was. When Tigger turns, Jr. is tugged back which indicates he was holding onto something. That is even before Tigger puts the arm lock on him!