I tried to search for how to on YouTube about removing iMac stand this morning. I used words "take iMac stand off", "iMac stand removal", and iMac stand removing"(some of them are from hind while typing iMac stand... in search text box). To my surprise, I could not find any contribute about this issue. I then tried to do search on Google, still no luck.
I thought that there must be a way to remove it out easily since I saw all the iMac has a slot on back for wall mounting. Then I searched for "iMac wall mount" on Google. Soon I found the following result:
This how to is actually for mounting kit for 24" Apple LED Cinema Monitor. I think all the iMac computers should be in the same structure in their stand. The structure of stand is very small and clean. I'll take my current iMac on travel with stand off so that it can be easily packed to my carry on bag.