I'm working on a "how to" just by taking pictures of which bolts can be removed and how to dismantle this tower. But I won't dismantle my tower again, 'cause this a real pain.  
 
Just to show that a double tower (and of course a simple or triple) can be dismantled, here is a picture from Natas, a member of oakley-fr.com. 
 
 
 
And an other one :  
 
 
 
 
 
Notice that you'll have to unscrew 62 screw nuts if my count is good.