The case was obviously more complicated than just his gun broke and he's in jail, but despite the complicating factors, the bottom line, for me, and the "take home" message I got, was that it doesn't matter if a gun is malfunctioning or broken, if it fires more than once with a single trigger pull, you run the risk of incurring the wrath of the ATF, and its unlimited resources, for having an "illegal machine gun."
I don't know about you, but to me, that's VERY scary!