Yup, that seems to be the working theory.
https://www.boston.com/sports/boston-red-sox/2017/07/30/slow-motion-watch-how-sandy-leon-avoided-the-tag-with-his-acrobatic-game-winning-slide
You can see how he reacts after he gets up.
@redsoxstats
With Leon seemingly hurt the PawSox got a 3rd catcher from AA today. Swihart hasn't played in a month. Would need a 40-man spot for Butler.
Romanski was promoted from AA to Pawtucket today. Coincidence?