At this point, Spurs are playing with house money. With the Warriors looking so dominant and being such heavy favorites to win it all, the Spurs can pretty much do whatever they want and you can't really blame them if it doesn't pan out.
Neither Miller nor Martin are going to be the difference between us winning it all this year or not, so ing about it really means nothing. Hopefully they bring a little something to the table (if Martin does indeed wind up here), but if not, whatever. No real loss. Let's just see how it plays out.