RAD anger can actually be pretty easily deflected. I'm not talking about a full blown rage here. But when your child is angry and throwing verbal daggers at everyone there are a couple of things that work for us.
One is changing the subject. Think of the movie UP!
I have used something similar to this so many times. In the middle of a heated conversation. "What do you all want for dinner tonight?" "Look at that weird building" "I think Madison needs her nails trimmed" (dog)
OR make faces. Practice some really ugly ones in the mirror and make them at times of early escalation. If you wait to long it won't work. If you do it early on you might be surprised by the response!
Remember: When things get too tense. Release the squirrels!!!!
Have a healing day!