A well-run organization who makes the playoffs (even the 8 seed) will be fine.
A well-run organization who doesn't make the playoffs will also be fine.
A poorly-run organization who makes the playoffs will have problems.
A poorly-run organization who doesn't make the playoffs will also have problems.
So the question isn't so much whether the Spurs make the playoffs, but whether they are a well-run (or poorly-run) organization.
Since most of the people who want to tank also think the Spurs are a poorly-run organization, there's really no hope. At least not for them.
Sorry to break it to you.