Thrown under the bus?
I read that as you were the victim of internal misconduct on the part of your manager? The fall guy for another ones wrong?
If so, call the EEOC, file a complaint with them. Its anonymous and you are protected by both state and federal law from any form of retribution or retaliatory acts including untrue or unwarranted information being passed on by your old boss to a potential new employer.
EEOC investigations can cause employers, especially former employers alot of heartache and heartburn and if found in violation of any section of employment law or regulations is $10,000 for each offense.
I had to go this route with a previous employer.
I filed a serious safety violation against them. The FAA came in a popped them good. They knew it was me as I was the only one who could of had the knowledge of all the events. So they waited about 6 months and trumped up some BS against me and began steps to fire me, then have me violated by the FAA. I retained counsel and we went the EEOC route.
They first tried to blow them off claiming the issue was between them, me and the FAA but that went over like a lead balloon and in a day or two 3 EEOC Investigators showed up in person and began raising all kinds of ruckus.
It turned out my old employer even tried to hid my actual employee file from them. Falsified time sheets and trip related documents. Then, once caught read handed, they denied everything.
EEOC ended up fining them over $60,000 just for the document SNAFU. I have no idea what the actual penalty was for my case being founded.