Disturbing, but every study needs to be evaluated on its own terms. Many studies are flawed, and don’t accurately reflect reality.
That said, I wouldn’t be surprised if many MO teens go off the derech once they go to college. Even the college has a sizable Orthodox community, the anti-religious ideology of many courses and non-Orthodox students will inspire many MO kids to go OTD, no matter how strong their upbringing. The key, I think, is to send them to YU/Stern (or even Touro), where the “normal” thing is to stay on the derech.
Hmmm…why am I not surprised that the first person to (falsely) claim MO is apikorsus is supposedly a “Y.U.” type. Moderators, why do you let such a comment through? Is one of the purposes of the CR to trash any Orthodox Jew who doesn’t fit into your definition of charedi?