joe mauer on DL with "leg weakness." um, what?!

i just saw this story on sportscenter, and when i tried to look it up all i found was the same AP story all over the place:

  http://www.kare11.com/news/article/919441/391/Twins-put-Joe-Mauer-on-disabled-list 

and you really don't even need to look at it, cause you get just as good an explanation from reading my headline.  i've watched a lot of sports and heard of guys going on the injured list for a lot of reasons, but this is a new one.  and what's with the twinkies lately?  first morneau misses half a season with a concussion, and now mauer goes on the 15 day DL with shaky legs?  they need some wheaties.