Kind of, yeah. There is a good timeline on when the ship was in water, when an event would have occurred, plus a very narrow geographical search area. That is significantly more information than is ever available when chasing ghost submarines.

It is difficult for me to imagine some bored analyst did not pop open a graph of activity within a 30 minute window of suspected loss of contact time for the area. If detectable, a ship implosion is likely a pretty aberrant signal in the data.