Gloucester Principal Sullivan Can't Remember

From the AP an update on the high school pregnancy story.
Gloucester Mayor "Kirk says Sullivan has told city officials he can't remember his source of information."
This is as bizarre as the original story. How do you go to a major magazine, tell them all about goings on at the school you run and then later forget where you got your information? This doesn't even begin to make sense.

The Associated Press: Mayor: No support for claims of pregnancy pact