Yip, that's part of the fan. The other half is where it should be, inside the turbo housing.
This is the piece that fell on the floor when the tech pulled the unit from the car.
A result of clogged oil feed lines, since the oil changes weren't done often enough.
It's a 2008 Saab V6 with (iirc) 130,000 miles.
Way too young to die.