He always pushes for an apology from the kids - which often inflames the situation.
Drumstick lolly gate.
Dd2 (6) already had a lolly in the car. Not a drumstick one though.
When I bobbed In to the shop dd3(3) wanted a drumstick lolly so I picked up a small bag of Haribo for dd2.
It was a grave mistake and dd2 started crying
(she is going through a stage of crying over everything) because she didn’t get a drumstick lolly too.
I know - petty.
I was dealing with. After going round the houses she was warned she would go to bed if she didn’t stop it. She ended up being told to go to bed. No shouting.
Off she went. (With her iPad)
Dh decides to get involved my shouting to her down. Try’s to explain drumstick gate. She’s not having it. He tells her to come and apologise to me
she’s still too wrapped up in drumstick gate. He tells her off and takes her iPad off her cue more crying and banishes her to bed all night. 
He should have just left her alone. I’d dealt with it.
I told him to keep his nose out and not get involved.
He is now loitering at the bottom of the stairs.