Remember:
It is impossible to plagiarize unintentionally or by accident
It is impossible to spin an article unintentionally or by accident
Just like in the game of cricket it is impossible to hit a six unintentionally. You can however wanted to hit it towards long-on but ball might end up as a six over thirdman… yes that is possible. But you have deliberately swing your bat ;)
So in other words you did what you did deliberately, you just didn’t know if you get caught. That talks a lot about ethics. Again I don’t think I want to be preaching but I also think community is not stupid.