Is my wife correct that my experience of being naked in public shows a deficiency in my Iman?

I saw some sort of event going on probably someone’s wedding, therefore there were many people around and I saw myself fully naked, in front of some people who were around as I walked from our first floor to ground floor. I was feeling little ashamed but trying to find how to cover myself. Suddenly while I was entering into my house, which is in Karachi Pakistan, someone gave me a towel to wrap around me and I was happy and then I faced a lady who works with me in Bahrain who came to attend that event. When she found me in that getup, she started taunting me or fun of me.
My wife correlated it with one of Muhammad’s (SAW) ahadith, and believed that it shows deficiency in my Iman. Could you please confirm? If this is the case I am not sure why I saw myself completely naked although I am not a perfect Muslim but still try to follow rules up to my capacity.
Please guide me!