I agree with the ruling, I did think he was stepping over the line when he did this. I mean, it's unianimous so how could you not. No ambiguity on this one. I distinctly remember thinking "errrrrhh this is gonna bite him in the ass, the GOP is going to be livid and sue over this, I know it". That said, it's clear why he did it. The GOP's sole primary goal is to cockblock anything the current administration does by any means necessary. They were taking loopholes to prevent this so there was absolutely no way to get anything done.
The best thing that came out of the ruling is the change made to those little "gavel in gavel out" loopholes that kept this from being able to happen in the first place. It's an obvious trick that shouldn't be allowed, and now it's not.