When there's a great deal of commotion, it is hard to keep an eye on things. There are reasons why so many firebugs are firehouse volunteers...they go where the fires are.
I'd urge every youth minister to keep the activity level to the point that he can keep an eagle eye on the volunteers.
Nothing happened in my case, but my nature is risk averse and others might call me paranoid.
Just because you're paranoid, doesn't mean they're not out to get you...