Do you reckon there is any truth in this?

Logan's signed by contract to three films, which is why he corrected himself (more than likely management came in and told him to correct what he said). To Logan the project is dead, and to many others it is too. Anything can happened like with what happened with Sea of Monsters, but since SoM made less than TLT, the odds are even less that Titan's Curse will ever be made. The best we can hope for is for a reboot in the future, hopefully better than this attempt.

It's a Wikipedia article for crying out loud.

Halfblood Camper #4
Valar Morghulis