Regarding his having a vodka in the morning, it is reported that he came off an overnight positioning flight. That being the case, the vodka was probably a "wind-down" drink (although 8 hours before duty sounds a bit odd. 11 hours would be more in line with crew rest). I also suspect there is a lot more here than meets the eye. 8 hours from a single vodka might leave some residual alcohol, but not enough to be over even the driving limit. So, either porky-pies or there is some underlying medical problem we don't know about. I guess we'll never know the full story.