He's got a mac address ban so he will need different hardware to spoof his way in and we'll recognize him immediately just by his inability to land a mission.
The best way HTC can ban some one is by banning their credit cards and name on the credit cards.
IP addresses can be changed even if you have a static IP just use a VPN
Mac addresses Can be changed either in hardware (Bios or Router Setting) or software.
Even with banning CC# and/or Name on CC Account, some one can still get in with a Visa/MC gift card which generally has no name on the account or use another persons Credit Card and make the account in their name.
Unless the game had some sort of financial investment like paying for each aircraft vehicle and/or map like in WT/IL2/DCS, the player really doesn't loose anything on a ban, just access to the game; at least until they figure out how to get past the ban.
Maybe Hitch should ask for a $30-$50 Non refundable or forfeitable Deposit to play the game and be a little more liberal with the permaban hammer.
Edit: Also need a Perma-Squelch