yes, it's fixed gear. I took the sprocket off and put a spacer on, I couldn't tell if made the chain line any different, it still looks good to me. I have had the same crankset, bottom bracket and rear hub for many years with no problems including many times riding where I'd let it get slack. I recently changed to a much larger chainring and sprocket, I don't know if that's got anything to do with it.
And thank you for the comedy gold above. Hopefully you guys will experience something similar in the near future so we'll have an opportunity for more laughs together!