{mumble}{mumble}
Just when did this engine break away, bearfoil? And where does word of this mildly dramatic event appear in the ACARS reports? I'd even hazard a guess that something as dramatic as a VS separation would also be quite evident in the ACARS messages if it happened at altitude.
It takes a minute or to for something plane shaped to make a 35,000' altitude change unless it's in a vertical dive. And that would chop off ACARS messages. (A dive more than maybe 30 degrees in the right direction would block ACARS. In the likely direction it'd take closer to 45 degrees, I suspect. The ACARS antenna has a rather broad beam width judging from its specified gain.)
So it appears ACARS was unaware of really dramatic events such as significant pieces leaving the plane. (And if the plane was at altitude for that last report, belied by cabin pressure warnings, the debris was in the wrong place.)
{^_^}