If this story holds up, if there's significant potential that Clarence Thomas will retire soon, it should motivate Republicans to press even harder to get a presidential nominee other than Trump. There are a lot of ways to get rid of Trump, but none of them are easy, and none are likely to work. They're worth trying, though, and they should be pursued much more than they have been so far.
The Washington Examiner story doesn't have much substance to it yet, as far as I know. It gives us some reason, but not much, to think there's a good chance Thomas will retire soon. However, it's a matter of settled fact that a replacement for Scalia will be chosen soon and that Anthony Kennedy could easily die or retire in the near future. We could easily see three non-liberal justices replaced soon.