ME176CX: Slow Bootloop...bricked?

Hi,

...now "it" has infected my device...

Setup:
ME176CX Lollipop (second update by ASUS)
rooted, Xposed, XPrivacy.

It seems, I had misconfigured XPrivacy and disabled a vital permission on a system component.

Symptom:
The tablet boots, displays the "desktop" -- in black -- sometimes with the buttons on the navigation bar (not reacting
to anything), the taskbar is also visible...but that's it. After a short while it reboots.
I can reach droidboot (fastboot mode)...
Lollipop was installed via the temporary recovery method.

Normally a fix is to put a file called "disabled" into one of the directories (will google for that) to stop XPosed and
with that XPrivacy. But this needs adb to be activated and functioning normally but this is *not* the case here.

And before I screw up my tablet even more I better ask...
Would this work
1.) Prepare a zip containing only one file called "/<correct path to XPosed>/disabled". Call this zip "update.zip"
2.) Boot into droidboot (fastboot mode)
3.) Use the temporary recovery method to flash this file into the system causing XPosed to be disabled.
4.) reboot.

Will this work? Any other idea?

Thank you very much for any help!
Best regards,
tuxic