Enemy AI declared as threat, keeps like that even if you are out of his sensors range or it is not engaging you

[Google Code Exporter]

Keeping you from finishing the mission without jumping to other sector or 
landing

As reported by light_gemini 
http://www.hard-light.net/forums/index.php?topic=81010.msg1615776#msg1615776

Original issue reported on code.google.com by rhyskidd on 13 Jun 2012 at 12:40