There's this whole bit about how Spock has developed this particular meditation bit, which is Full of Manpain, because he had trouble with a particular part of Kolinahr and this crazy-ass stupid meditation of his is a coping mechanism of some kind. It just reads to me like he got seriously messed up in the head during that whole thing. (Which is how a lot of his character arc in TMP reads to me anyway, so I have a bias.)