I always cringe when he does this, but it does serve a purpose.
It lets reporters know he is still going to hit back when attacked and it tosses a bone to his millions of twitter followers who love this kind of stuff.
And as for Joe and Mika...this (their affair) is their Achilles' Heel.
At the end of the day, I think Kellyanne will deal with Trump better than Manafort. If she wants him to stop this kind of behavior, she will tell him so and he will obey.
Trump tends to listen to women more than men.
Who doesn't? Women don't stop until they get their way.