People use OCD as some sort of personality disorder and don't really know what it is. He may have OCD or he may have obsessive personality disorder and is just classifying it incorrectly.
I've suffered from actual OCD, and still do to a degree I believe, and believe me what I say it's pretty much hell in your mind. It like as if your mind got stuck in a 'gear' and you get repeating thoughts constantly. That happened for me for a few months a decade ago or so, until I went to the doctor, told him about depression (which was true as well of course in that hell) , but the real reason was because of a 'thought loop' that would constantly repeat in my head. That was serious hell. The SSRI and ERT therapy I was doing for myself basically broke it, and that phase was over. There are some seriously bad people who have it for years. I read accounts in these books of things like a lady who saw some advertising on one of those highway road signs and it was stuck in her head for years and agonized over thinking it over and over again, then that seeps into her life avoiding going outside to not see it, etc.
I've had general OCD as a kid and really even my whole life, even though I've never really thought about it like that until I got older. I remember asking my mom to resign some signature she did for something because it wasn't in the lines enough. Then I would collect basketball cards and pick at the edges if they weren't perfect and end up destroying the card. I remember having and insert card mailed to me once and ended up destroying it like 30 minutes after I got it! LOL. That happened a lot.
I still have a little of that going on, mostly with electronics and things in my mind that aren't in 'perfect' condition that I consider something I want to keep. Staying busy with work kind of keeps me out of obsessing too much, but its still there a bit.
Hopefully whatever GSP has he gets help. One thing about OCD is it's a bitch, and idle time really only makes it worse. The only real way to fight it is to force yourself to do what you fear. Make yourself repeat the thoughts you don't want until you're no longer anxious about them and don't read into them, and they just go away because you don't care if they're around or not.
Anyway, that's my experience, good luck to GSP. Only he knows whats going on in his mind but just like a fight - he can combat it.