I downloaded the official rulebook of mlb, and there was no mention of this disabled list process. If you could direct me to the section that covers this, I will check again, but I've read it twice and don't see it anywhere in there. I also did some Google research, and there was no mention of any process even remotely similar to that, except for the new 7 day concussion DL, which must be signed off by the league medical office. Aside from that instance though, it appears that there is no such process, so long as the player doesn't dispute it. That is as I expected, since we've all seen numerous phantom dl stints.