Student or Learner
Is the sentence There are horses for all back that way saying
There are plenty of horses right back there ?
The sentence makes fine sense to me as it stands - if we go back that way, we will find a horse for each member of our party.
Trying to rewrite everything will indeed make you dizzy, and is refusing the author any independence of style, 2006. Rather than seeing such a sentence as wrong because it is not plain, read it in terms of the entire context. Taking any sentence away from its links will make it seem nonsense.