Demon Seed Correlation

I caught an interesting parallel in the parable of the sower (MK 4:1-9) and the story of the demon possessed man (MK 5:1-20). In the parable of the sower Jesus talks about the farmer sowing with reckless abandon seemingly not caring about where to best put his seed. We all know that usually in this parable we are taught that only some people will react correctly to the gospel message (good) and some will not(bad). But notice what takes place in the demoniac story. Jesus healed a man physically and spiritually, right? Was he looking to be saved from his sins? Was he searching the torah looking for the answers of life? NO! Jesus was spreading the gospel (seed) much like the sower had been doing in the parable a few chapters before. I think He was showing us how to put the parable into action. We should be spreading the gospel to people regardless of whether they seem "ready/fertile" or not. I have never heard a comparison between these two stories and I thought I might try to show how I see their relationship. I want to see some comments to see if maybe I am wrong or misguided,
thanx.