Hey guys, 
 
I wanted to get some opinions on a problem I really wish I wasn't having right now.  My profile for applications (fall 2012) looks like this: 
 
at a top 25 public university 
GPA: 3.8/4.0 
GPA (chem): 3.9/4.0 
GRE (gen): V: 152 (56%), Q: 160 *84%), AW: 4.5 (76%) 
Research experience since end of sophomore year, along with REU at Colorado State 
 
The problem: I just got back my Chem GRE scores by calling ETS, and they are FAR below what I would like (<40%) 
Obviously by my GPA you can see that this is not my normal performance.  I did not have the time I would have liked to prepare for this test and had other circumstances preventing me from doing well on test day.  
 
My question is whether I should try to address this in my SoP (with out making excuses, somehow) or just leave it out.  And also is there a way to stop the ETS from sending it to school who do not request it?  I was applying to Yale, Princeton, and Columbia who all at least RECOMMEND it, so I just threw it on my non-stretch schools that I was already sending my general scores to as well (Colorado State, NC State, Vanderbilt).  
 
Any information you can provide is greatly appreciated