It was almost a “Who’s on First” kind of thing.
This is the link I was originally trying to find, and just now found it again. This has BOTH 911 call transcripts from the social worker (down in the article a little way). The second 911 call was when the house exploded. It was not a whole lot better than the first (maybe a little better, because it was finally AN EMERGENCY):
http://www.dailymail.co.uk/news/article-2098876/A-history-violence-Josh-Powells-mother-filed-papers-saying-threatened-butcher-knife-teen.html