It's not on any insider knowledge, just seems fairly plausible.
Even if Blue is sitting on cozy profit margins, it's still another high speed six to run, maintain, staff, with added grooming and snow-making required. Also add in upped insurance costs if you want too. I'm sure some manager/exec at Intrawest is trying to tweak the profit margins all the time, and this just upped the expense column.
That said, Seward is right on about alleviating crowds elsewhere. I know they have eyes on expanding on the other side too, which might be a better option for glades.