I say it's not rule braking, if i get the picture right. The guy with the A ship kills B and then B moves to Sair space for some raid and fun....and A has a C named Sair ship too...and here comes why i say "no" because C shoots first...you said "A logs off and switches to C, a Corsair Titan, who then soon joins a Corsair fleet. C then spots B and engages him." So virtually after C attacking B...B has no choice but to defend himself.
As i understand, rule sais if you get shot then you can't reengage the guy who killed you within 4 hours with any of your chars. But it's not saing the guy who shot you can't reengage you with another char.
