Springer is fine as a corner OFer, he still has the speed/glove to make plays. It's santandar who is the clear downgrade defensively.
I expect him to be batting 6th/7th upon his return if Bo's back. At that point, you can debate whether youre better served with him as a pinch hitter since it'll only be a difference of around 2 ABs and take the much better defense from Lukes for most of the game.