What is the most logical next event?

How to stop your horse from chewing things
Determine if your horse is bored.
Your horse is likely to chew or crib (grab objects and suck air through them) if he is kept in a stall. This is especially true if you have an energetic horse that is stalled for several days at a time without much to watch or little social interaction.
You may also notice a bored horse : Weave or pace kick the sides of the stalls show separation anxiety toss his head become aggressive Give your horse some space. Make sure your horse can spend time in open space, such as a pasture or paddock.