So Ginjou gets cut, and it takes some time for Tsukishima's ability to take effect.
Well, we don't know for sure, he just could have been waiting for the right time.
Ah, so Ishida is on Ichigo's side, because GINJOU cut him, not Tsukishima.
Agreed, but as seen on page 17, there is blood unlike before when Tsukishima cuts him. So he can also slice and dice normally.
I'm going to read that chapter again:
https://www.mangareader.net/bleach/429/18
and
https://www.mangareader.net/bleach/429/19
We don't see his face, but his clothes show that it's Tsukishima.
Agreed, he might have just been a diversion to give Ginjou an opening. The question is why? Why not just turn Ishida?
Okay, so Tsukishima and Ginjou were on the same side. Then Tsukishima cut Ginjou so that Tsukishima is seen as the enemy (probably to all of XCution). He then cut him again, and took himself out/restored what it actually was.
I don't quite see how this turns Ichigo from enemy to ally, unless it's something that Tsukishima said.
Who's ally?
Now we just need to know why Ginjou hates Ichigo. Probably goes back to Isshin, somehow.
And probably also related with Ginjo's Shinigami's Badge.
It's all very confusing, and I don't think even Kubo himself understand it all properly. Something tells me someone will come and explain everything clearly.
Agreed, I'm betting on Isshin/Urahara or that mysterious shinigami.