I concur with Mindy.
The pacifier, for him, could just be a thing that he associates with sleeping and so he doesn't want to sleep because he knows once he gets his pacifier, its nap/sleep time!
Smart baby! Not odd at all. He is just getting more independent as his cognitive skills are increasing and his sense of "self." At this age, they start to "decide" what THEY want/don't want. Just my take on it.
I would, leave SEVERAL pacifiers in the crib with him, as an "option." He is old enough where he can grab one at will if "he" wants to.
I would also keep some cuddly favorite child safe toys IN the crib WITH him. For my son, his crib is so comfy and cuddly and he has his little stuffed toys in the crib WITH him, and he naps well that way. He will entertain himself for awhile...then fall asleep on his own. He even talks to himself in the crib. Its "his" routine, and sometimes he will even bring a toy in with him, that he chooses, and then he will nap that way. Right now, my son loves bringing a toy car in the crib with him... and before he actually falls asleep I will hear him playing with it making car noises and giggling too. Its "his" way to wind down. Then he puts it aside, and falls asleep. My son LOVES his crib. Because it is "for him" and not for me. My son even likes to have his crib toys in a certain spot in his crib and will arrange things the way he likes. ALL a part of HIS routine, and how HE likes to nap. I also put a sippy cup of water in the crib for him. And he drinks it before sleeping.
Just some ideas,
All the best,
Susan