In any event, even if Miami is out of the picture for Bryce Brown, that does not mean he's going to LSU. Most of the people who think they know what's going on believe that Tennessee is not a serious player at this point, and that if Miami is out then he's really down to Oregon and LSU.
When was the last time LSU and Oregon went head-to-head for a recruit? I wondered this earlier today, and then realized it wasn't really that long ago. In the 2007 class, quarterback Darron Thomas de-committed from LSU and signed with Oregon, apparently because LSU kept recruiting other QBs after Thomas committed. LSU ended up with Jordan Jefferson, and Thomas played a fair bit as a true freshman at Oregon. I think both LSU and Darron Thomas are happy with how it played out.
Don't assume that Oregon is a smokescreen. Brown probably wants to go somewhere where he believes he can contribute quickly, and Oregon is losing its leading rusher (Jeremiah Johnson). They return a couple of key backups, and there's certainly no guarantee that Brown would be able to step right in, but losing their main guy makes them look attractive. LSU has a big opening for running back, but really only if Brown is willing to understudy for a year, as Charles Scott is going to be the key guy this year and Keiland Williams is probably going to be the #2.