Former law professor Tey Tsun Hang was granted early release from his five-month jail term on Sunday for good behaviour.
Many, however, will remember that it was his inappropriate behaviour with a student while he was lecturing at the National University of Singapore (NUS) that got him in trouble with the law in the first place.
he 42-year-old was sentenced to jail in June after he was convicted a month earlier of six counts of corruptly obtaining sex and gifts from former NUS law student Darinne Ko.
He started his sentence on June 26 but did not stay in prison for the entire term.
The Malaysian was let out on Sept 17 after he was given permission to serve out his jail term on home detention.
On Sunday, he reported to the Selarang Park Community Supervision Centre to remove his electronic tag, which he was required to wear as part of the home detention order. Mr Tey told The Sunday Times on Sunday after his release that he intends to renew his passport, so that he can visit his aged and ailing father in Malaysia.
He also said he was anxious to reunite with his Japanese wife and his daughter, whom he says have been "shuttling between Taiwan and Japan".
He said his wife, whom he declined to name, still stands by him. He added that being able to communicate with his wife and daughter daily while on home detention gave him "a lot of comfort".