This question will resolve as 'yes' if the SA government formally expels the US ambassador before the end of his official term, for any reason.

Context

The US ambassador to South Africa, Reuben Brigety, has drawn the ire of the ruling party of South Africa by making claims that South Africa secretly shipped arms to Russia.

It is currently unclear whether arms were actually shipped, but the SA government denies it. There are now reports that they are considering expelling him, which would likely have negative repercussions for the South African economy, which is already in a terrible state.

The following article has more information, and googling the issue should yield further information https://www.dailymaverick.co.za/article/2023-08-08-aggressive-push-to-expel-us-ambassador-from-sa-as-government-data-shows-no-weapons-exports-to-russia