Well if he grabbed him he could, but at the same time he would be vulnerable to Madara sucking him into a different dimension but I think that Madara's tech works faster than Minato's.
with strategic move..he could seal Madara but it may be hard for him. Madara's space time ninjutsu makes invinsible.
It doesn't make him invincible. Konan, Itachi and Minato found a way to counter it (though Itachi's way was indirectly). I'm not sure if Madara would have been able to warp Susanoo as well btw, considering that it's an ethereal warrior.