It doesn't look like anyone took the situation seriously. He was asked to register as a sex offender, but it doesn't look like it was ordered by the court. He gave an intersection near a school as his address and apparently that was acceptable to everyone.
"Stanley, a U.S. citizen, crossed the border and was located in the Seattle area last week.
Authorities asked him to register as a sex offender after Canadian officials decided not to seek extradition."
http://www.huffingtonpost.ca/2013/10/22/michael-sean-stanley-arrested-seattle_n_4143632.html