i think people may have missed the background dialogue immediately after leo gets back from the cave. the doc and some patients had just come out of a meeting and he asks leo where he's been. leo says he's been walking around, checking out the island. well, in that scene you see the two patients he interviewed earlier and if you listen and watch you can see there confusion at seeing him again. specifically the lady that axed her husband and wrote "run" says "i don't remember what i'm supposed to remember anymore." she's talking about what she's supposed to remember about leo and what they coached her to say and believe.