I've partied with Windvalley (the BLM you are referring to) on 2 occasions.
1) A PT in Onzozo (level 62-63). It worked out fine, except that he enjoyed MBing with Quake nearly every battle. Then, at the end he said that he didn't have Warp II. It wasn't until the WHM had teleported us all to Altep that he used Warp II on myself and the other JP member before warping himself.
2) In Bibiki Bay, we didn't have an excellent puller and had a very unusual PT set up. I died (I don't even remember the circumstances anymore but it involved a stray goblin and the other PT nearby) and asked politely if they could find an R2 because I was close to levelling. Windvalley immediately R1's me, and after waiting for maybe 3 minutes, starts 'yelling'. "WAKE UP MONKEY," were his exact words I believe. We weren't exactly making fantastic exp per hour so I ignored his offensive nature and we moved on. Then an incident occurs between our puller and the other PT (consisting of Babagana, Merodi, Seriph, among others) and their PT wiping. Windvalley, after they've all been raised and are sitting weakened right next to us, demands we pull more goblins. At this point I was unhappy with his attitude, his behavior, and the PT in general, so I disbanded.
I can't really say what's going in his mind. Both my experiences with him have been negative... but if anyone can possibly find out what his motivation is for his strange behavior, be my guest.