You really aren't very bright, are you? If you were, you'd realize that the document you linked is not binding, that a prospect could sign it, and later sign another financial aid agreement and attend another school as long as that school is not in the Big Ten.
And, yes, I did see the reference made to a "Letter of Intent," but it wasn't to any sort of process. You'll notice that the first sentence of Section 7 begins with the qualifier "If." Thus, said "tender" couid be executed without a Letter of Intent (which is very likely what UM's seven early enrollees did).. This is borne out by the section on the same page captioned "Type of Award" which lists four types, three of which are not accompanied by Letters of Intent, and one of which doesn't even involve aid that's countable under NCAA rules, which was the subject under earlier discussion where your command of the subject matter was so stunning. So why don't you simply crawl back up your asshole where you'll feel safe, warm, and secure because even the Boogie Man fears to tread there.