Can SPD interfere with socialization?

My Son is 25 months old. His speech therapist and OT suspect he has SPD ( sensory seeking). He frequently runs along furniture, or squeezes between two chairs, rubs toys on his body, runs and crashes into things, etc. Anyway, I have seen him be social at times but he usually tends to keep to himself while at daycare. He is affectionate, understands many things, is only mildly speech delayed (can say about 200 words, just isn't stringing them along real well yet). I'm scared to death of Autism! I was just wondering from someone with experience if that once the SPD becomes more manageable does socialization pick up?