Retroactive appeal?

[WestMichBlue]

Close play at 1B, ball in dirt, pops out of F3's glove just as B-R jumps over the bag. Blue signals safe.

While still stretched out and touching the bag, F3 picks up ball, stands up, looks at B-R strolling back to 1B, and throws ball to F1. Blue makes no call and moves on to B position.

Defensive Coach calls for appeal, claiming that B-R missed 1B. Blue says "too late, Coach, runner is already back on base." Coach claims that F3 touched the base while having possesion of the ball before the runner returned to the base.

Your call?

WMB