It seems that Theoden has a lot in common with our Toyota Hilux. Once he has been put into four wheel drive he may be extremely strong but he feels like he is dragging. The answer to getting out of four wheel drive in our car is to stick it into reverse until the light goes off. In Theoden's case putting him into reverse appears to have turned a light on. Instead of a horse that wouldn't go and wouldn't stop as I had yesterday, Theoden was soft, willing and responsive. We worked on walk to trot transitions and reducing the aids down to just thinking him up a gear. One two three four to one two one two. Easy!!
The smile on my face says it all and I had a lovely ride back to the stables where we have been staying throughout the clinic.