Engineering Degrees Wasted-12 Years of Life Gone

I went to Wright State University (WSU) in Dayton, Ohio. Earned a BS in Biomedical Engineering (BME) and an MS in Human Factors Engineering (HFE). For over ten years they used me as cheap slave labor teaching/lecturing fundamentals of engineering and senior design along with a myriad of lab sections. All the while they dangled the fish of potential employment. Once I turned 60 years of age they decided that the easiest way to get rid of me was to hire me. One year later I'm fired on trumped-up BS charges like not making enough progress on my PhD (they didn't even ask to see my work and poor student evals when over 90% of students gave me favorable evals. All my teaching experience was there and now I can't get a favorable reference. Nothing left but the streets.