I wonder if this Secret Talk is going to be something like:
Yen Sid: "Mickey, it is imperative that you do NOT tell Sora anything concrete about what happened ten years ago, but instead that you are very vague about it, obfuscate the truth at every possible chance you're given, and just about generally make things as inconvenient for him as you can."
Mickey:"But master Yen Sid, why the gosh darn heck would I do that to my trusted friend and ally?"
Yen Sid:"Because Nomura hates explaining things clearly. If you explain everything clearly to Sora like a normal, decent person who is actually trying to fulfill a goal in a competent and straightforward way, Nomura won't have the wiggle room to pull plot twists out of his ass for the next ten games in the series!"
Mickey: "Gosh! That sure is bad news! Don't worry master Yen Sid, I'll whip up some nonsense on how he needs to be reborn from ice cream-stasis while I scribble "Marmoset Coatrack" all over the walls! The fandom, will make up so many theories about that they'll HAVE to buy all those games to find the answer!"
Yen Sid: "Excellent- I have trained you well."