No, the reason Tia needs Jack is not connected to Jack stabbing the heart...at least not that I've heard. 😉
SPOILERS ABOUT NORRINGTON>>>>DO NOT READ IF YOU DON'T WANT TO KNOW!!!!!!!!!!!!!!!
**Norrington's sword is linked to his death, but I don't believe he gets stabbed with it. **
However, why it remains until nearly the last scene in the film is a bit of a mystery to me, so I'm hoping it's a good thing. 😄
**As in, James is coming back. But I dunno for sure.**
I know, I know you all are so hopeful about J/E, and although it's mean of me to keep pointing it out, that script of CotBP where they clearly establish more of a love pyramid ( a bit of Norrington included in that!!!! ), they set it up so that Elizabeth chooses from the three men present, and er...it isn't Jack.
What is clear to me is that TnT wanted to establish a true love pyramid, and set up doubt in whom Elizabeth would choose. There isn't a hesitation on her part at all in that script.
And in DMC, the commentary there are a few lines that can't entirely be ignored are these (not the exact quotes, since I don't have the commentary written down 😛 ): "What doesn't get debated much is how much Elizabeth weighs Will life into her actions." and also, "We decided the only way for Elizabeth to kiss Jack and for it to remain true to the characters was to have Will's life be at stake".
I can't help it; I can't just let you all work yourself up to J/E stuff only to be disappointed when AWE comes out. Better to deal with the disappointment now rather than to have the movie ruined half-way through for you. 😄