The following is an excerpt from this newspaper article, it is about Robert Mugabe, Zimbabwe's previous leader who recently died,
Throughout, Mr. Mugabe remained inscrutable, some would say conflicted. Remote, calculating, ascetic and cerebral, a self-styled revolutionary inspired by what he once called “Marxist-Leninism-Mao-Tse-tung thought,” he affected a scholarly manner, bespectacled and haughty, a vestige of his early years as a schoolteacher. But his hunger for power was undiluted.
It is my understanding that vestige means some trace, trait or ruin that proves something existed before. I can't really think of what vestige above could possibly be referring to, is it the fact that Mugabe affected a scholarly manner? if so, isn't the bespectacled and haughty in the middle kind of strange, since it's completely unrelated to what is before it nor after.