This however did not solve my problem, I will file another bug report for the remaining partI am also still struggling with getting BT working again; do you have a link to the other bug report?
Addendum: the missing bit in my case (besides installing libspa-0.2-bluetooth package and removing pulseaudio-module-bluetooth) was that I had to re-pair the device. Now it seems things are working again as before.
Kind regards, Ralf