Strike?

[JJ]

R1 attempts to steal. Batter begins to "swing through" the pitch to distract the catcher, but the pitch is a pitch out - way out of the batter's reach - so he checks his swing. (Clearly) After the catcher has thrown the ball, the batter slowly swings the bat in frustration because he could not swing through to distract the catcher.
All of this description is my opinion, but the end result was the batter did not swing at or swing through the pitch in anything close to real time.

Strike? Can you get that one and if so, how would you justify it? At what point does a swing stop being called a strike?

JJ