OK, final stats for yesterday:

Calories in:    1330 (9% carbs, 24% fat, 67% protein)
Calories out:  3390
Deficit:          60%

I'm playing with protein-only days the day after a refeed with 2 sessions of steady-state cardio and my leg workout to see how it feels. Obviously, not something I'd do more than once a week. Surprisingly, my energy levels were pretty high throughout the day, so I guess there is something to those refeed days. Weekly results and pics in the next post.