Stator means “Stalin triumphs,” derived from the elements Stalin torzhestvovayet. I think it’s safe to say this name rapidly fell from favour in the wake of Khrushchëv’s Secret Speech and the resulting Thaw!
Sentyabrina means simply September. My guess is that this name was used in honour of some of the events which took place in September 1917, such as the declaration of Russia as a republic.
http://panzercentral.com/forum/viewtopic.php?f=96&t=36301 (penultimate post)