Take your pick:
Because I wasn't thinking
Because I am stupid
I gave a trick and gave partner a further losing option.
I am sure that my comment came across mean and arrogant. It was not my intent. Jack, I respect your game more than most in IAC. I was seriously asking about your thought process in making the switch. You are too thoughtful a player not to have something in mind. I may disagree with your analysis or plan of action, but I still thought it worth hearing a recreation of the moment. I learn from these moments, whether I am recreating my own moments, or listening or reading about someone else's.
I am sorry if my quick jotting down of a question, led to anything other than using this hand as a learning experience.