I'm voting Minato on this one.
Most of the arguments in favour of Sasuke seems more akin to
not lose conditions rather than portraying a decisive way for him to beat Minato.
As for Minato, the ability to teleport the Susano'o away from Sasuke is a very severe win-condition that Sasuke doesn't have a great counter against.
Minato being able to teleport the Susano'o at all is a contentious topic, although i would heavily argue that he is capable of doing so.
During the fight against Sasuke, Itachi's Susano'o was stated to have a completely impenetrable defence in the form of the Yata Mirror. The Yata Mirror's impenetrable capability comes because it's composed of all five Chakra natures (stated bottom left), exactly like the Senjutsu Truth-Seeking Orbs.
Possesing all five Chakra natures gives the ability of negating all Ninjutsu, however
Space-time Ninjutsu worked completely fine on Truth-Seeking orbs on multiple occasions and did not show any capability of negating Space-time ninjutsu at all.
Seeing as Itachi's Susano'o and the Truth-Seeking orbs therefore should have similar nullification abilities, the former shouldn't have any reason to be able to counter said ability if the latter wasn't capable of doing so either.
And as Itachi's Susano'o should have similar properties (and in some cases just outright superior properties due to the Yata Mirror) than Sasuke's, i don't see any reason why Minato wouldn't be able to teleport Sasuke's Susano'o wherever he chooses.
We also do know that the Susano'o isn't guaranteed to follow its user and can be seperated if done fast enough. So FTG just teleporting it immidately does seem very plausible.