I was watching the last episode, and I got to the part when Aqua was walking outside of Yen Sid's tower, wondering where she needed to take Ven. All of a sudden he summons his keyblade and opens a keyhole, but he is comatose. Can someone explain?

that makes sence but thats something physical....

Can it not be something physical? I think it makes sense too, I mean Ven and Terra have kind of lost themselves at the moment so their keyblades reacted to help Aqua.

ecactlly....I mena what can, can be then emtainly of a non-pyshical essance.