As you may be aware, billionaire entrepreneur Elon Musk came in for a hefty amount of criticism at the weekend when he tweeted several disparaging remarks about one of the divers who had been part of the team that rescued the Thai football team.

It seems that Musk's feelings had been hurt when Vernon Unsworth called his offer of help (which was to lend the rescue team a miniature submarine to get through the cave) a "PR stunt".

To say that Musk's retaliation was slightly OTT is an understatement; he took to Twitter to allege that Unsworth, who lives between the UK and Thailand, a 'pedo' (i.e. a paedophile).

"Never saw this British expat guy who lives in Thailand (sus) at any point when we were in the caves. Only people in sight were the Thai navy/army guys, who were great. Thai navy seals escorted us in — total opposite of wanting us to leave," he wrote, before demanding that the rescue video be shown and then changing his mind again. "You know what, don’t bother showing the video. We will make one of the mini-sub/pod going all the way to Cave 5 no problemo. Sorry pedo guy, you really did ask for it."

Now, after a huge backlash (during which Tesla's market value dropped 3.5% on the stock market), Musk has backtracked and apologised after Unsworth hinted that he would be taking legal action. He took to Twitter to apologise this morning: