Matt 24:48-50: " But if ever that evil slave should say in his heart, 'My master is delaying,' and should start to beat his fellow slaves and should eat and drink with the confirmed drunkards,the master of that slave will come on a day that he does not expect and in an hour that he does not know, and will punish him with the greatest severity and will assign him his part with the hypocrites. There is where [his] weeping and the gnashing of [his] teeth will be."
Notice, the slave only has to say it "in his heart." Not in print. Not in public. Seems like a beat-down to me.