I didn't have a probe I could leave in, so I cooked it like you did, monitoring water temp constantly for a little over an hour, pulled it out, and inserted a digital probe in the immediate center. It read 161F so I put it back in, turned the burner off, and let it continue cooking as it returned to room temp. Then I chilled it in the fridge overnight before slicing it...I microwaved the slices for about 20 seconds and the pink hint disappeared and it tasted amazing.