Wouldn't the length of a "sophomore slump" by definition, be approximately one (1) entire sophomore season?
I mean, it's concerning and he's had a miserable second season. But it hasn't helped that the guy brought in to insulate him, has been unexpectedly injured for a good portion of the year now. This is trial by fire...and he's burning. This is what a happens on a team bad enough to be called "tanking". In this case, it's at least partially about an injury to a player that
should be insulating here. But it's a good taste of what throwing a bunch of rookies into the fire can look like. Little preview of a "full blown rebuild", where a guy like Horvat is asked to do way more than he's ready for.
Any "tank team" is going to necessarily have guys leading the league in the most ugly of categories. Plus/Minus chief among them. Any team bad enough to "tank", will be bad enough to have a horrendous goal differential, a bunch of young/inexperienced players drowning in their minutes...and as a result of that, a long long list of minuses compiled over a season.
Bo being deep in the minus territory, is exactly what "tanking" is about.