It's not Rob's barrister, ColdTea, he's the prosecution barrister. In fact I did wonder what the hell he was doing talking to a witness's relative.
I guess what happens next may depend on what the juror tweeted. If it was just about what was happening in court, on the face of it the trial can continue as he won't have said anything that the papers aren't reporting anyway. If it was something about what the jury thought, which is meant to be totally confidential, that would be more serious. My hope is the former, not least because SOC won't want to leave on the anticlimax of a retrial some time in the future.
It was interesting that, when Bruce sneered about Rob blubbing, Rob said something to the effect that it was a better way to get Helen convicted than shouting out in court. Which does rather confirm what we all know, namely that it's a carefully thought-through strategy.