Ultrasound revealed a slight strain on his deep flexor tendon. All flexion tests, and trot-outs showed him 100% sound, so while the heal time for total improvement is 7-10 months, Harley's not going to be on rehab that long.
Ice the tendon for 10 minutes a day for the next 7 days. Turnout as normal, no boots required. No bute, no other medicine. No special work, just "let him show me if he's lame", and "let him tell me when he's had enough".
What a neat thing. Yes, it's an injury, no it's not severe, and as long as he isn't limping in any way or head-bobbing, work as usual.
If we're going to have an injury, this will do.