Only if you promote them to full members first, so they can become priests. So this argument of yours has no bearing on the argument of this topic. For those "griefers" you speak about, your religion does have a ban option.
But that's the problem, they can't be demoted back down to aspirant or kicked once they're found out as spies. It makes no logical sense for any organization to allow a known spie to continue receiving their information just because they were ordained.