Well, preventing OC from going out is pointless. This ain't Hotel California!
As said, it might be too drastic and need to be debated. Though, you're probably the first one I've heard that used a OC IDed char to explore Sirius.
Perfect ideas don't exist, thought there is always room for a compromise. Also, nothing prevents the players from using an other ID or ship as a substitute. You don't need the OC ID to RP as one (I said RP, not Pvp:P) unless you must absolutely commit illegal acts.
((note: I'm not proposing to ban the ID itself, but some combos...relatively the problematic ones that we tend to see too much around Liberty: Sabre, Tridente, Falcata))