NCAA Obstruction

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Just to confirm my own understanding of this situation:

R1 could be awarded home if the umpire judged that R1 could have scored, even though R1 had retreated back to third. (I have heard some persons argue that if he had given up on his forward advance, he doesn't get that advance base.)

Also, (same scenario but w/2 outs), but in this case the throw from the outfield went into second nailing the BR who tried to stretch it into a double - thus the 3rd out. R1 was only half way home from 3rd when the out was made. Umpire could score R1 judging that R1 would have scored before the 3rd out (Time Play).

Both of these outcomes are legitimate awards based upon umpire judgement in this OBS situation?