Thanks all. I done all the IHG surveys available prior to 2013. Unless there has been any new ones (which I don't think), or the ability to do it a second time, it won't work.

I actually have more than $400 in eRewards that I was planning to transfer to AS/AA in the future. I logged in just now....and checked. Unfortunately IHG isn't one of the option. Aside from airlines, etc, the only hotel I can choose is Choice Privileges.

Maybe I'll shoot IHG an email before proceeding with the buy/donate option.