Anyway, the farrier came yesterday and did his own evaluation. He determined that the main sources of lameness wasn't laminitis (though it was still possible that Flash did have it, but was better now), but rather thin soles and was able to show me evidence of it in how his hoof looked and how he responded to pressure in certain spots. He put shoes on the front said he wouldn't be surprised if Flash was sound by today, but it shouldn't take longer than 3 days (which would be Friday).
Flash seemed to be feeling much better today - absolutely no tripping nor stumbling. In fact, he even was playing some and threw in a few bucks and loping. He shouldn't be doing that and I didn't encourage it, so he didn't do it too much, but it was nice to see him want to play again. I recorded a short video so other you all could tell me if you think he's still "off". Though Flash was moving stiffly and other HF members could see that from the videos I posted in the other thread, I still missed it and don't trust myself to be able to tell whether or not he's sound yet. What do you think?