9th grade commitments to a coach are NOT like ED. Either side is free to walk away and the 9th grader may not be admitted to the school anyway. In fact, nothing is signed and nothing can be signed. I know a bunch of early committer who did not go to that school, and in fact early committing is no longer allowed in lax because the coaches asked that it be moved to junior year.
There is a reason the NCAA doesn’t allow binding commitments with 13 and 14 year olds- things change.