delayed dead ball

Bret man.... and others? This question came upon another site. Most people were split as to whether score R1 or send R1 back to 3rd? Obstruction question. R1 at 3rd and R2 at 1st. No outs. Batter hits ground ball to the infield. R2 is put out at 2nd on a force play but was obstructed by F4...