Oh please... He hit some trees on approach. This has WHAT to do w/ it being a twin ?
To me this sounds like a classic case of busting people because you can. Have you guys ever read those NTSB accident reports. There's always a section about the pilots certificates and the paperwork on the plane and the pilot's BAC.

You can practically hear the disappointment from whoever is writing that up when some irregularity with the paperwork doesn't show up so they can have someone to bust.

The thing i WOULD bust him for though is this:
"The National Transportation Safety Board said Malin was not wearing a seatbelt. She was pronounced dead at the scene. Fay suffered bruises. "

So the takeaway is tell your passengers to put on their seat belts! And practice some night landings. And watch out for trees.