Minecraft launcher disappears but leaves a crash log

Before you read this, just know I am here only to have 2 questions of mine answered. Also, I do not have the log file, nor do I remember what java version I had at time of the incident, which was 3 years ago. I also do not remember the specific version of the game, although I know that it was roughly 1.6. I AM not here to inform about the bug, but instead to have questions of the bug/incident answered.Anyways, A long time ago I was going to play mc, when I clicked the application It was gone. Then I got some sort of crash log that was titled "banned" with the date, which marked August 1st. Then I logged onto my Minecraft account which worked just fine. After I reinstalled Minecraft on my pc everything worked fine. Now that you know the scenario, you should also know that the bug has been resolved, butt have questions about what happened. Anyway, like I said before in the article. One being, is this a normal bug, or is it something else, which leads into my second question; by something else, I mean that could have Mojang suspended or banned me? My Minecraft username is neimani. Anyway, I wonder that they suspended me, because in the log, it says "banned". I have not violated the TOS, and I have never hacked. A few things to keep in mind, would be that I had not played Minecraft for 3 weeks, this incident occurred when the new launcher came out, and also that I did not remember what java version I had( It probably had not been up to date, due to my inactivity). Anyhow, It would be just awesome to me if a mod could respond. I have been bothered by this for a long, long time. So, I decided to ask someone about it now! Thanks for reading!