Hi all,
I did find a way to remove Rosetta again, but it involves the Recovery because the files are SIP Protected.
- Obtain a list of files/directories and LaunchAgents with: pkgutil --files com.apple.pkg.RosettaUpdateAuto
- Save them in a way that you can access them in the recovery
- Boot into recovery
- Make sure your disk is mounted
- delete the files from Disk
- reboot
I don't list the files here as the list might change with a later version of Rosetta.
I hope this helps everyone who is in the same Situation as I was.
Best Regards
Timo