You have to think that if Dallas can pull out this win and steal home court advantage and somehow win this series, that'd go a long way toward Durant leaving this summer. I can't imagine him re-upping with OKC after going out in the first round to Dallas.
Even if we also lose to Atlanta in the first round, we have a legitimate injury excuse and Durant would make us infinitely better, while also having room for another max-level free agent AND a high draft pick to use for a trade or for a good young prospect. That's not even mentioning being in the East and having the much easier path to the finals.