Yes, but in that case other web analytics packages will also have access to referrer that contains the search query and there is no problem.
I wasn't clear enough, sorry - I was concerned with how Google could be able to share the search query _only_ with GA but not other analytics tools, because it is clear that Google will not sacrifice GA usefulness to some ajax SERPs.
I might be missing something, but I think Google can easily modify their redirect script to store the data they want (for use by Google Analytics) and then strip that data out before it hits the target URL.
