For all the talk about Lebron undermining Blatt, I think Love might be just as big of a culprit. While he keeps his mouth in check, his effort level shows an iceberg like level of frustration with the play calling. And Lebron might stay regardless of the coach, but Love? If he bolts, it's going to be worse for the franchise than letting Boozer walk in 2004. Love is the guy that can sink Blatt.
http://www.fearthesword.com/2015/1/15/7543705/roundtable-so-whats-up-with-kevin-love
I don't understand why David Blatt is using him the way he is. Keeping Love at the elbow has its issues - for one thing, wings have to be in the corner to provide spacing and cutters, which hurts transition defense on missed shots - but to use Love as a floor spacing big roving around the perimeter on the weak side sort of feels like using a yacht to troll around to fishing spots on a tiny lake. You have a friggin' yacht, David Blatt - take that thing to the ocean (er, Lake Erie, I guess). Maybe if his offensive confidence improves, his defensive effort will as well.
In a perfect world, players would give maximum effort and focus on one end of the floor no matter what's happening on the other end, but that's just not how it works in the NBA. Some guys feed off getting stops or blocking shots, others off of getting buckets. Love definitely falls into the latter category. I'm not saying the Cavs ought to copy the Wolves' playbook from last season, but if they bumped Love's elbow touches up to seven or eight per game, it'd do wonders for both their offensive efficiency and Love's individual confidence.
I said all that so I can say this: if this is how Blatt plans to use Love, then the franchise is at a crossroads and has a bit of a decision to make. If Love isn't an ideal fit for Blatt's offensive scheme, and is unwilling to be content molding his offensive game to fit what he's being asked to do, maybe they'd be better served to look for someone else who would share the coach's vision (and plays better defense).
Do I think this is a plausible scenario? Not really. Coaches have been proven to be eminently more replaceable than players, and Blatt's got way more problems than just his relationship with / usage of Kevin Love. Provided Love is used correctly and has a rim protecting center alongside him, I have no doubt in my mind he could be the third banana on a team that contends for a title.