I was attempting to explain how the OBS rule, in particular the 'protection' from being put out between the bases where the OBS occured, can be nulified by a subsequent play at another base. Had a play at another base not occured, and the runner was out by more than what the umpire judged to be caused by the OBS, the runner would be sent back to 1st, not called out, because the protection would still be in effect.