lisa mcelroy , 50 , who teaches legal writing at drexel university , accidentally sent the explicit message on march 31 .
mcelroy said she was ` in terrible shape ' when she first realized what she had done and saw her name make headlines .
yet the professor said she found the matter ` pretty trivial ' and questioned the dignity of those who forwarded the ` unintended post '
mcelroy , who has tenure , was investigated by the university and has been cleared to continue teaching .