[fiasco]

R1 at 1st base, BR hits grounder to F4 who tosses to F6, who puts out R1 at second.

R1 is a slow runner and is only 2/3 of the way to 2nd base when he's put out but proceeds to trot to 2nd base even after he's put out. Because of the angle, F6 is unable to make a throw to F3 for the second out of the DP.

I'm thinking this is interference and BR should be out, no? What responsibility does R1 have for getting out of the way once he's called out?