This is canon
This is the 4th comic on nedroid’s website (http://nedroid.com/2006/02/2008-hoops/), the first comic to contain Beartato (that we know of) and when I met Anthony Clark at Emerald City Comicon I asked him one simple question:
Why did Beartato’s house burn down? WELL FEAR NOT AS THE TERRIBLE SECRET IS REVEALED IN THIS EXCLUSIVE REVELATION!
Now everything makes sense… forever.