Okay, so you can't just "Go Rogue". You need a plan... and your 'mech is currently guarded by armed men and clamped to a wall (Although docking clamps are occasionally weak enough to be torn out by a 'mech, at great damage to the 'mech).
In addition to this, what about a support crew? No one person could get enough of an understanding of a 'mech and all of it's systems to do full repairs on his own.
You CAN go rogue, but you need to think it through.