It's not my place to make that sort of judgment, and therefore I don't. I think what's telling is what you believe now about your own experience as a Christian. And now, today, you don't believe God spoke to you, and you don't believe that the Spirit led you, and you don't believe that God convicted you of sin. That's what matters.
I don't need to, nor am I interested in doing that. It would be enough for me that you acknowledged that God exists. Acknowledging that God exists is the first step, then we can get into specifics about God.
I think it's more likely that God exists because the alternative is that some person who hardly knew me randomly decided to give me $2,037. Except that isn't even accurate because they did it because they believed it was the Holy Spirit prompting them. So when I look at the situation as it occurred:
1. My wife and I had needs that equaled $2,037.
2. We didn't share the need with anyone.
3. A person in our community, who we weren't close with was spending time in prayer.
4. As a result of the time they spent in prayer, they believed that God wanted them to give us exactly $2,037.
5. They obeyed and did what they were prompted to do even though they didn't know us well and didn't know our need.
So when I look at what happened, I think the more realistic explanation is that God was involved in the situation. Sure, some person that we didn't know well could have wrongly believed that God was telling them to give us exactly what we needed, but I think that is harder to believe than God being involved.
But of course, as an atheist, you aren't capable of accepting it as a work of God because it would result in a complete paradigm shift of the foundation of your entire worldview.
I think "another supernatural" explanation would also mean that there is something beyond the natural, which I didn't think was an acceptable answer for an atheist. But sure, it's altogether possible that my body had some natural, internal healing ability turn on that is currently unknown to the human race and for some unknown, completely natural reason, my body was able to heal 6 fractured bones. Sure, that's possible. Anything's possible, right?
I've never had a Muslim tell me that Allah healed them after they prayed to him. Have you?
Allah is just the Arabic word for God, so I suppose it wouldn't be altogether unfathomable that God might heal a Muslim after they prayed. Granted, I would think that God would have done that in the hope that the Muslim would eventually learn the Truth about Christ. But who am I to say that God can't heal a Muslim?