Why did the Connecticut Supreme Court refuse to enforce the contractual immunity agreement?

Sullivan, C. J.
This appeal.arises out of a complaint filed by the plaintiff, Gregory D. Hanks, against the defendants, Powder Ridge Restaurant Corporation and White Water Mountain Resorts of Connecticut, Inc., doing business as Powder Ridge Ski Resort, seeking compensatory damages for injuries the plaintiff sustained while snow tubing at the defendants’ facility. The trial court rendered summary judgment in favor of the defendants..