Strange Words from Justice Scalia

Indianz.com reported about Justice Scalia's debate with the ACLU (Nadine Strossen). One of the issues raised was Employment Division v. Smith (1990).

I'm sure this is taken out of context, but it's a scary thing to hear from a sitting Justice (quoting from Indianz.com):

Scalia himself warned that shifts in the court could result in significant changes in the law. "Someday, you're going to get a very conservative Supreme Court and you're going to regret what you've done," he told the ACLU president during the debate.

What exactly will "we" regret? And isn't the Court already pretty conservative?

Strange.