Don't really see why but...
I went offline and brought up target with a .target200 and exited. Went online into Titanic Tuesday and target was there, the target disappeared with a .target 0 command.
Now of course I don't know what plane he was in, what map he was on, if had his shoes and socks on or off or if his hair was parted on the left or right.
Either way I'm assuming it was a brief glitch, possibly, but definitely not a repeatable bug.