I can't judge if you broke the rules or not but not showing up on Google's SERPs is terrifying and a stark reminder on how dependent we've become on Google traffic.
I included an image of my adwords account. The ad had been running for years(albeit infrequently due to very low budget), and I had not touched it since creating it. I checked after this all happened, and there were several warnings from adwords, but nothing from webmaster tools. I simply ignored the adwords warnings as I was not actively using the account and figured they were just disabling ads. If I had know these…
It is very important to remember: when dealing with Google AdWords, the definition of a violation changes with time. If you violated the current policies in the past, you may still be banned. You take a great risk running there and any and all warnings you get should be dealt with immediately.
That said, seeing an exclusion from organic based on an AdWords suspension is extremely alarming. That may be exactly what the DoJ is looking for in terms of violations by Google.