I get the whole syaoron idea thing. The only thing I have trouble understanding is remember when they are looking for the book of memories? Who was it that beat the guardian beasts, was it the clone syaoron (the one with the co.) who got his own mental state back or the real syaoron's mind (aka, the one in the test tube kinna thing)

that was a sign of the real syaoran awaking, thus the heart of him returning....

so it was the clones blank mind defeating those guardians