the bush administration's interpretation of the SOFA doesn't matter much at this point. they can be as creative as they want with their own translation, adding asterisks and bracketed exceptions to their heart's content. if the agreement actually goes into effect january 1st, the bush administration's interpretation will only matter for 19 days. it's not really enough time to muck things up too much and, in any event, they won't be around when the withdrawal provisions come into play.
the real question is how does the new administration intend to interpret the agreement.