Senalan Bug?

shadowchb

I have encountered a problem while trying to get the circlet at Senalana. I made the mistake of going backwards through one of the interior doors and now can't get that door to open, and the button on the wall is no longer active. I went completely out and tried to re-enter and the Aeylid stones are not in the holders and the outer door will no longer open. The Aeylid stones are no longer in the encampment chests either. My map shows a black arrowhead at a point on the road next to Senaluna (to the East) saying 'claim circlet' but there is no above ground reachable entrance to the Senalana tunnels there either. Thus the quest cannot be completed and Razum Dar is still under the rubble. Any suggestions?