Maybe Rolf just survived the fight, went back to Lutz and killed him for sending him to do his dirty work and getting him almost stranded on the Noah.
Oh sure, you can't come back to rest now.. go kill hundreds of thousands of innocent earthmen. Oh and Lutz can't bother to revive any dead people like he did Rolf. Some great telemental!
Probably to cover up that he sent Rolf to fight the wrong DF. The 1000 year one was busy beating up Ohario and Anna who had no nei weapons.
So Rolf became the 2nd generation Lutz and never had kids.
This Rune doesn't force Chaz to do the dirty work of Lutz and has more common sense than Lutz.
Now how is that for a wild theory?