Depends on your game. In NCAA, that is a legal defensive play, and runner is out on LBR. That play is used regularly by Mississippi State; catcher tells PU "I am going to talk to my pitcher and I am NOT asking for time".
In ASA, the case book ruling on Play 8.8-67B is "Time out is called. Defensive deception cannot be allowed to entice a runner to violate the look back rule."
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