Pretty sure Jordan Clarkson is pure blood Pinoy on getting a rage quit moment and his inner Pinoy side is kicking in, I really love JC but pretty basketball will surely get you heavy contact with one another there is nothing to get mad about a heated game can surely cause something like that and Kuminga is not really intentional with that Jordan Clarkson should have just ignored it, but still love for both players it was really a heated game, and everyone really wants to win so badly,
The inner Manny Pacquiao came out. 
Well, that's the thing, it's a contact sport and Kuminga just acted that way because he felt like the contact was too much. Frustration really does things and sometimes it gets out of hand. I remember Jokic doing a clothesline to Cameron Payne due to frustration too as they were losing against the Suns in the playoffs, it's actually the refs that should be blamed but he took it out to another player which is wrong. Same result, flagrant 2.
I realized this too... I believe day after day they are improving... It's not something very significant, but it demonstrates they are there and they could be in the playoffs soon. I also believe... Kyrie Irving and Kevin Durant have a great job ahead of them.
Just to add to the other reason for their recent wins, their head coach Jacque Vaughn. It looks like he had good control over KD and Kyrie or he is doing the right player rotation. Yes, I do agree they are on the right track now for a possible playoff entry.