User blog comment:EDN1980/Okay, first blog post at SPN wiki/@comment-24169020-20121216013316/@comment-3481504-20121216014918

Well, there's two theories on that--Seeing as he, Castiel, used the word "would", it's laminating an hypothetical inclination. Pretty much saying, "Dick would go to Purgatory if he had a soul." The other one is that Dick went back to Purgatory upon his death. But Soulless Sam would not going anywhere upon death, he'd simply cease to exist much like Angels, demons, and pagan Deities.