Grobelaar fell victim to that well known disease that affects people who get involved with the law - not to quit when you win on one case against the odds, but to carry on chancing your arm.
He was, of course, cleared in the criminal case, but then sued the Sun for libel (they had famously videoed him arranging the fixing of matches with an undercover reporter posing as a gambler). His argument was that he was just playing along with the alleged gambler to gather evidence. He had intended to go to the police, but the Sun ran the story before he had a chance to do so.
He called expert evidence from Bob Wilson amongst others who analysed then footage where he had allegedly let in goals and said that they thought BG had made every effort to save the shots in question.
Astonisngly, the jury bought his story and awarded him oodles of damages. The Sun appealed on the grounds that the jury verdict went against all the evidence - despite the notorious difficulty in appealing jury verdicts on such grounds. The Court of Appeal concluded that the jury could only have found for BG on the basis that he had promised to cheat, but had actually not gone through with the cheating - i.e. he had doubled crossed the gamblers - so whilst it was technically a libel to call BG a "cheat" as the Sun did, he was, in fact, a liar and a double crosser and, given this, incorrectly calling him a cheat hardly effected his reputation at all. This meant that his damages should be tiny and he got £1 and had to pay the costs which, I believe, bankrupted him.