The problem here isn't that an Outlander got flagged, because they don't care. And it would be less troubling if a hero Trib flagged a hero Outlander because he's playing a corrupt Trib. But it sounds like an OOC mechanical exploit when a Trib arbitrarily flags your out-of-range character that could have retrieved without issues, but now cannot retrieve and can be killed with guards by an out-of-range Tribunal.

A Tribunal flag is the only way a hero can directly kill a lowbie. Because of this unique and powerful ability (IMMs have rightly hunted down and fixed every out-of-range murder loophole over the years) there has to be extra scrutiny to make sure it isn't abused.

In any other circumstance, if a hero found a way to kill lowbies and abused that, they would get banned.

Lastly, if you find yourself struggling to justify the IC actions of your char (which this thread clearly does) in an attempt to resolve a OOC mechanical exploit that's possibly being abused, that's the definition of bad RP.