Well theres a few reasons for that and that is as a result of talking to npc:s in mor dhona.
1: They either dont bealive the accusations in regards to what happend and decides not to arrest you.
2: They dont want to die, afterall your the warrior of light, slayer of primals and god knows what and only a madman would piss you off.
For the games sake it would make no sense to not have acces to uldah for many reasons such as GC, crafting and such.
/tencharacters