The choice was quite clear.  The knight that had come to his home the other night had been clear about the desire for secrecy.  He quickly ducked into the passage and spun around, looking for some way to close the passage.  His heart beating in his chest, he quickly tried to close the hidden wall.   He wasn't worried about being found out... he was out of place, but not doing anything inherently wrong.  That being said, he still had no desire to be seen.