crazy play

[umpharp]

Had a weird play this past weekend....I was on the bases so it was really my partner that had the play....

ASA Fast pitch

R1 on 3B, R2 on 2B, and R3 on 1B (bases loaded)
0 outs
Batter hits a ground ball to second.
Second baseman throws to first for the out.
R1 breaks for home. The throw from first is caught by the catcher who is standing on home. No tag is ever made on the runner. The runner seeing the catcher catch the ball and thinking he is out, slows down and walks/jogs around the plate never touching it.
Meanwhile, the catcher throws to third trying to get the next runner.
The ball goes over third and into the outfield and the runner continues home and scores.
It is not until after the play is pretty much done that R1 goes into the dugout.
What do we have?
A) Is R1 safe unless an appeal is made that he missed home.
B)Is R1 out when he enters the dugout even though a runner behind him scored or
C) is R2 out for scoring before R1 therefore passing a runner?

We ended up calling R1 out and allowing R2 to score, but I don't think we got it right.