Thanks for the reply. I think you are correct. However, I just realized that I can hold the award ("retroactively") starting from May 2011, so that should do it!
I'm a continuing student who received the OGS for the 2011-12 academic year. For personal reasons, I'm planning to leave (i.e., drop out of) my graduate program after the fall semester. If I accept the award, I'm assuming that I will get the $5k for the fall. Would I have to pay this back if I leave? Or will they just cancel future payments? Thanks.