My ankle had swollen up again after a couple days at work..
So I worked from home Wednesday and after elevating for Tuesday evening and half of Wednesday things were pretty much back to normal so I hit the treadmill again.
Things are proceeding fairly well. I got another couple days (Wednesday and Thursday) of 50+ minutes in zone. I'm fairly sure that the temperature of the workout room is having an effect on how much work I can do and keep my heart at 122 beats per minute. That's frustrating to a degree because there are already enough variables that I cannot control that I really don't need yet another one to make things difficult.