It either has to be that:
1. The analytics that teams use vary significantly from what is out there publicly. Although guys like Schlemko and Cody Franson are analytics darlings to many, they never stick for long with NHL teams. I refuse to believe that NHL teams are less advanced that many publicly-facing stats people, so in this case, they are probably looking at something totally different that doesn't paint those players in as pretty of a light.
or.
2. There is something else going on behind the scenes that we don't know about, and that, just maybe, Schlemko might be an asshole.
Hard to tell which is true, but there is clearly something.
Credit to DW though in only losing Schlemko, and managing to hold onto Dillon, who has been great this season.