R1 on 3B, R2 on 2B, no out. B3 hits over-the-fence home run. R1 touches home as team comes out to celebrate at home plate. R2 rounds 3B, approaches home but joins the crowd in the 3B side batters box never crossing home. B3 comes around and touches home. R1 realizes that R2 never touched home and pushes R2 to home plate.
Now what?