Well interestingly, the decision to marry Rhys and Beth was made by then-Script Producer, Coral Drouyn. She left the series halfway through the 2004 season and was replaced by Bevan Lee.
Of Bevan's decision to write out Rhys (and Max), he said in a 2004 BTTB interview: "I preferred to lose Rhys and Max through a very human story of a man falling in love with his first wife again."
Of Coral's opinion on Rhy's departure, she said in a 2007 BTTB interview: "I would not have got rid of Rhys – at least not for some time. I think Beth was made into a victim…and I haven’t watched the show this year so I don’t know where’s she’s going now.
I had planned a pregnancy for them, which threw the whole family into disarray (Kirsty and Beth pregnant together) and then …because of her age…. The baby has problems – will be disabled…and she has to make the decision whether or not to go full term. She decides to terminate – for the baby’s sake….Rhys is outraged and leaves her. Kirsty and even Kit turns against her….you killed a baby….they can’t understand her dilemma…. that she felt it not fair to bring a really disabled baby into the world. Hopefully it would have played with the same intensity as the Rhys infidelity and the Kirsty/Kane story."