Obstruction Oddity

[youngump]

Originally Posted by IRISHMAFIA

OBS runner tagged out between the bases where OBS. Dead ball. The cause for the out was NOT one of the exceptions noted. However, since there was not a second OBS after the retouch of the base left early and she did not reach home, the default to satisfy the OBS ruling would be place her on 3B.

Of course, it could be that someone else may have a different interpretation, but I'm going strictly by the rules as I read them from the book.

How does considering the retouch square with the requirement to decide the award at the time of the obstruction?