I tried to do my due dilligence to see if this was posted already, but didn't see it. Mods please feel free to delete if it has been.
Some high level recruits were signing multiple agreements "that permitted mid-year enrolling freshmen to sign financial-aid paperwork with college programs after July 31 of their senior years."
These aren't national letters of intent, but was a loop hole that allowed kids to have a sort of agreement with multiple schools without having officially committed to any of them.
A few examples of them had a particular theme, one that may be apparent to you all as it was to me (copied from the article):
• Josh Malone, the No. 7-ranked receiver prospect nationally out of Gallatin, Tenn., signed agreements with Clemson, Florida State, Georgia and Tennessee before pledging to the Volunteers.
• No. 3-ranked running back Dalvin Cook of Miami, signed with Miami, Florida State and Florida. He settled on FSU.
• Safety Laurence Jones of Monroe, La., rated No. 3 at his position, signed with LSU and Alabama. Jones then committed to the Crimson Tide.
Additionally: "The NCAA officials said their organization has no power to limit the number of agreements a prospect can sign, because financial-aid documents -- unlike the letter-of-intent -- falls outside of NCAA jurisdiction."
The rule apparently applies to early enrollees or, more accurately, those who enroll mid year.