I think this rule is most appropriate here:
Quote:
12.19.2 Interference by Runners
12.19.2.1.4 Physical contact by the runner with a fielder attempting to field a fair batted ball or a foul ball that might become fair shall be interference, provided the fielder had a reasonable chance to make a play and was prevented from doing so.
Note: If both players’ actions are appropriate to the situation and contact could not be avoided, it is inadvertent contact and neither interference nor obstruction.
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The emphasis is how it appears in the rule book.
IMO, the drawn in infield and moving back towards the ball and the runner moving towards the outfield as the ball is being played is "appropriate to the situation". I think no call is correct.