When attacking your own personal summoned mirror image - the player is flagged "criminal" for doing so.
Problem 1) Cannot dispel, attack or get rid of mirror images in Trammel. They time out fairly quickly so it isnt too much of an issue (60sec or so)
Problem 2) In Fel - If a player attacks their own summoned mirror images (which is the only way to get rid of them other than timing out) then they will flag as criminal for 2minutes.
Fix - If they were made to be guilded on summon then they would have a "green" guilded name and could be attacked by guild members or yourself (in trammel too) and without flagging in Fel.