Well, now the question is what was the the interfference made by Yuuko.
I think, Yuuko and clow came up with a plan......
I put it in a spoiler, so people don't have to hear me ramble
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OK, I bet the witch did some thing. Her and Clow knew that Sakura was going to lose her feathers, and that syaoran (clone), will gather the feathers for FWR. So they came up with a plan. They got Fai, and Kurogane to join. Fai, sent him self, and kurogane got sent by Tomonto(I can't spell her name >_<), to help Sakura and Syaoran gather the feathers for Sakura, and not Syaoran...
Now, here is my idea. Some thing happen to Ashura, which made Fai run, which got him to meet up with the gang. We all know that Kurogane mother got killed by FWR, so later tomonto (>_<) sends him away. And yeah, Sakura & Syaoran, we know what happen to them. Any, way, they all got sent or went to the witch at the same time. I think, that is what the witch & clow did. They came up with a plan to help Sakura & Syaoran. If that plan doesn't work, then not only does something happen to Sakura & Syaoran, but also to Sakura & Syaoran in CSS.
OK, I think I type to much, and I bet it doesn't make sense.