Saw this too late... and stepped on the same rake. Thank god for making me smart and have backups in place. One of those cases when a solid backup strategy saves the day.
Alternative to getting rid of wpasupplicant is to disable (or mask) its service:
Code
$ systemctl disable wpa_supplicant.service --now
# or
$ systemctl mask wpa_supplicant.serviceHope this helps someone.