Quote Originally Posted by Tavrobel View Post
Quote Originally Posted by cally777 View Post
Hmmm, does that fit in with this?
It is an ability that he has, and even if Sin is on cooldown, if someone ever found out about DZ and Yu Yevon knew about it, he could reset the city so that no one knew about the outsider. Most likely, the intruder would be killed.
Killed? By whom? The inhabitants of DZ? If our experience of Tidus and Jecht is typical they aren't barbarians and have considerable free will over their own affairs. Otherwise Tidus and his father could never have opposed Yu Yevon, even though they were in a sense his creatures (aeons).

So I think Jim Sour's point still remains that an Al Bhed ship could have located DZ and escaped during a period of Calm when Sin wasn't protecting it. Of course perhaps no one would have believed them...