Well on Wednesday Sinwaan got his vaccines. The vet came out and gave them. He got a Ft Dodge WNV and a Prestige 5-way.
The next day at noon Cindy noticed him walking funny. Doug told her to wait to call me and by that evening when she haltered him to take him out for a grass snack he looked ok again.
Friday morning he was walking funny again so she called me. I got out as soon as I could, about 1 pm. Sure enough, he was moving very oddly. Very slow, and putting his front legs out wider than is normal. Also stumbling a bit. Kind of what I've heard laminitis looks like. Well I was freaked out so I called the vet clinic. They were booked but if I brought him in they would get to him when they could. Since the weekend was coming up I wanted to have him seen during normal business hours.
Doug and Cindy were very kind and trailered him down for me so I could get back to work. The next hour and a half went by slowly and I was having a hard time getting much done. After work I went to the clinic and they thought they would see him at 4:30 so I left to do some errands. I came back and the vet was able to examine him while I was there. Well they put him through a number of neuro tests and he passed every one of them with flying colors! He looked completely normal to me. His temp was normal, heart rate was good, nothing out of the ordinary. While I was relieved, I was also very frustrated! I prefer to have an answer, but that was not the case. Doug and Cindy came back to pick him up and monitored him all weekend. I went out on Saturday to see him and groom him and pick up his paddock a little. No riding for me this weekend. Whatever the deal was, I figured he could use some extra rest.
I got a lot of feedback on both the PNER list and endurance ridecamp and the general consensus seems to be that it most likely is a reaction from a vaccine. Since he got both it makes it hard to narrow down what exactly he is reacting to so next time I will give them separately, if I give the WNV at all.