A breaker bar also comes in handy (pretty much needed). If you don't already own a Torx socket set, the Husky set that Home Depot sells goes up to T55. Most other brands stop at T50. HD also sell an individual T-55 for ~$2.
Do the WD.. RustBuster... MoovIt... and make sure that TorxBit is solidly seated. Torx is great?? OK??? but like any bolt make sure the bit is solidly seated. Watch yer knuckles !!!!