Went to see the experts at San Antonio Orthopedic Group (seriously, these folks are awesome) and have learned that the left ankle is "severely sprained" and that I am to refrain from running for ~4 weeks. Cross training is OK, though, which is good. :)
I go back on 14 August for a follow-up. In the interim, I am to pursue physical therapy and wear an ankle stabilizer. Fortunately, TSAOG was able to direct me to Academy for a $15 stabilizer instead of paying $90 for the one they sold. No wonder insurance is so dang high.
So that's the latest. Thanks for reading.