[Lenix]

hmmm...just thinkin...

Spoiler:

what if Shirou backs out from recharging with Saber, casts Rule Breaker then stabs Saber, Rin makes a contract with Saber to prevent her from disappearing then they go and try to find Berserker, then Archer comes back and fights Shirou, and Shirou finally becomes awakened of his powers and uses UBW and just at the moment when Shirou beats Archer a black shadow explodes as Ilya comes to Shirou so Archer saves them, but Shirou loses his arm and gets Archer's arm then goes back home to see Sakura worrying about him, then she says....

I guess the answer is "NO!!" xD