I had the same problem on my first oil change, ordered a replacement. After inspecting the strainer I believe it is glued together where it came apart. For an emergency backup I superglued my broken one and dropped it into an oil bath for a month. I wanted to see if it would come apart---it didn't.
Thanks for the reply. I too broke mine trying to take off the strainer. I noticed a small leak after a ride at Glamis. I superglued mine together. I went for a ride the next day. So far no leak. crossing fingers. I order a new one but the local dealers around me is out of stock.