Comment He did return to academia (Score 5, Informative) 49
According to the wikipedia article http://en.wikipedia.org/wiki/A..., he did later return to academia until 1988:
"He retired from scientific life around 1970, after having discovered the partly military funding of IHÉS. He returned to academia a few years later as a professor at the University of Montpellier, where he stayed until his retirement in 1988. "