foul ball interference

[MBlue]

Situation; Runner on 3B, the batter hits a high pop in foul ground to third base. The runner realizes that he could be doubled off on the catch and tries to get back to third and makes hard contact with the third baseman who still manages to catch the ball. The PU calls time declares 'no catch because the runner interfered and the ball was dead when he interfered', calls the runner out and adds a strike to the batter's count because 'it was a foul ball'. Is this the correct call?

[JimThompson]

If there are 2 out the batter is declared out. If less than 2 out both the runner and the batter are declared out