Obstruction Mechanics

[jTheUmp]

If you (as PU or BU) have an obstruction call where the obstructed runner is "tagged out" due to the obstruction, do you make an out signal, and then call time and indicate the obstruction?

For example, this happened to me a couple of games back (I'm PU, one umpire game):
R1 trying to advance to 3rd on a base hit. Obstructed by F5 while sliding into 3rd (contact prior to F5 catching the ball), causing R2's slide to stop about 18 inches short of the base. F5 catches the ball, tags out R1, then fires to F4 who successfully tags out BR attempting to advance to second.

I made no signal on the play on R2 (other then the delayed dead ball signal). After the tag on BR, I called time, and I put R2 on 3rd due to the obstruction call, and called BR out due to the tag.

I'm sure I got it right (although both coaches had to disagree with me, of course). But should I have made any kind of indication about the status of R2 prior to the play on BR?