Also, your comment on the sleepless nights makes me realize that you misunderstood the non-meditation periods in the same way that I misunderstood them during my first 10-day. I thought if I wasn't meditating, I was 'off' and mostly just passing time until the next session. But what I realized in my second 10-day was that there should be no down time. If you're not sitting and meditating, you should be walking and meditating, eating and meditating or showering and meditating or whatever and meditating. If you're lying in bed and can't fall asleep, you meditate. And what I found was that it didn't matter how much I actually slept because lying prone and meditating was as restful as sleep. If you ever try it again, try doing it without the notion of any down time...meditate through all of your actions as well as the prescribed meditation periods.
But I agree that the anti-science (and pseudo-scientific) parts were unfortunate. I served a 10-day after having attended twice, and was somewhat upset to see that they only made available traditional Chinese medicines to students and wouldn't even allow basic Western medicine (aspirin, immodium, etc). At one point, we had an elderly man who ran out of his high blood pressure medication. During a meditation session, his pulse rate spiked (~190 bpm) and he started freaking out. After following the teacher's advice and trying a traditional Chinese remedy (which, of course, did nothing), I finally suggested something with an actual basis in science (dipping his face in cold water to activate the mammalian dive reflex). That got the situation under control until an ambulance could arrive.