Complex sentence: SSM Operations Control Center engineers were able to recover the SMM minutes before total failure of SMM and nulled the satellite's rates for capture with the orbiter's robotic arm, the SRMS.
Split into simpler sentences: SSM Operations Control Center engineers were able to recover the SMM minutes before total failure of the SMM. The ground support engineers were able to stablize the satellite and null its rotation rates for capture with the orbiter's robotic arm, the SRMS.