I cannot say about Bolbitis, but can speak about Anubias.
It is possible, and sometimes it is the only option possible.
The plant will not be happy, but generally will eventually put out new fronds. I am siren it is possible to kill it by cutting too much into the rhizome. But constant attack on new propagules of BBA on rhizome or new growth will need to be made.
I have done a dual attack on BBA on some Anubias: 1) Cut all affected fronds and roots; 2) periodically apply Hydrogen peroxide (sprayed) onto roots, to kill left over BBA.
BBA is tough to eradicate completely and it cannot be thought of as a "once approach and done", where one does a treatment and it is gone forever. Most often it will not and a long fight is needed.