I've hand walked him every day for two weeks, adding a short trot out down the blacktop each day. I meticulously noted a percentage or grade to indicate his soundness level. At first, he was grade three lame, obvious at the walk. But over the course of the week, his lameness was downgraded to grade one, and then I recorded his degree of soundness at 90%, 95%, 99%, sound with a (?), and then just sound at the trot.
I finally saddled him up on Monday afternoon, but I pulled my stirrups off. I wanted to get a really good feel for his soundness at the sitting trot. It also just felt good to be back in my dressage saddle with a super long leg.
We did some free walk to start out, and Speedy felt 100% sound. His stride was long and even, and he was enthusiastic about moving out. I then asked for a trot which he offered willingly. The more I focused on my position, the less I worried about his soundness. It's easy to feel a lame step when you're trying to find one. I quickly realized that he felt good.
I really appreciate that my vet didn't over-react. We're taking a "cross that bridge if we get to it" mentality.