What operational state did NASA confirm was sufficient to keep the telescope running after initial gyroscope failures?

Answer

"One-gyro mode"

When gyroscope issues forced a pause, NASA confirmed that the remaining functional units were sufficient to keep the telescope operating for years to come by pivoting to "one-gyro mode."

What operational state did NASA confirm was sufficient to keep the telescope running after initial gyroscope failures?
HubbleSpaceNASAtelescopeproject manager