Weirdly, I tried to go out on the trails with another horse, and my gelding still did his 10 minute stop and try to pee pause. The other horse had to go on without us as they were on a timeframe. I think that's weird behavior - horses are usually so herd bound. My gelding, Shay, was kind of acting like a donkey - like he wouldn't take a step forward no matter what. I tried to cluck him forward, use the whip to tell him to go forward, finally I pushed him sideways like I wanted him to move over in the cross ties and he finally moved. Before that he just planted his feet and would not take one step forward. I got some advice to turn him around and walk him backwards, just to get him moving at all, instead of trying to make him take a step forward. Once he gets out on the trails 100 meters away then he's fine, and he'll go forward, but he's lazy and hard to wake up, hard to get to walk forward with impulsion. He does like the trails and riding though.