But it is now official - his Holiness has accepted Bishop Power's (aged 70) resignation under Canon 401#2 of the Code of Canon Law, viz, a bishop who
"because of illness or some other grave reason, has become unsuited for the fulfilment of his office, is earnestly requested to offer his resignation from office."
Unwillingness to uphold the teachings of the Church (such as on the ordination of women) is indeed a grave reason, and Bishop Power is to be commended for his integrity in accepting this (though conversion and obedience would obviously be better!).
I'd also note that despite his erroneous views on a range of subjects in recent years, he is a genuine liberal (as opposed to those who claim to be progressive but actually reject all diversity), even having said the Traditional Latin Mass for the community here in years gone by.
Please keep him in your prayers.