I'm sure it's do-able, but unless I set aside some time to try it I can't be certain what the precise steps are.
I know you'll want the stuff in SocialConfig.java. Roo projects use Spring's XML configuration, but you can mix-n-match. Just make sure that SocialConfig is loaded as a bean and I think it will work fine. You'll also want the views under src/main/webapp/WEB-INF/views/connect (or some equivalent to them). And there's likely something I'm missing...but without going through the steps myself I can't say for sure.
The best approach here is not to simply copy-n-paste into a different project, but to understand the parts that you are copying and what they do. That way if you miss something you'll have a good idea of how to address any errors that come up. For that, the Spring Social reference document should help. Of course, you're welcome to ask here in the forums if you get stuck.
Spring Social Project Lead