The station went offline at about 19:20 ChST on May 10th, 2013 (local time, Friday evening, in Saipan). It was noted by Mike J+ in Miami during Miami's Friday afternoon, i.e. after about 8 hours offline. Word was sent to Gordon and Joe in Honolulu but Gordon was on travel and not available for immediate followup with Docomo.
Communications resumed at about 2pm Saipan time on Tuesday afternoon, May 14th, 2013. So it was offline for just a few hours shy of 4 days. As far as we know, there was no contact with Docomo in this case that brought the station back online, it just spontaneously came back online.
Note that with the benefit of hindsight (I am retro-posting these blog updates so we have them for the record) we know that the station only stayed online for about 16 hours and then went offline again.
Mike J+