Former Wales star puts health first
Thomas, 42, rejoined the All Whites in the summer, making an immediate impact as the club began its rebuild in Super Rygbi Cymru.
But in recent months he has experienced medical issues linked to the brain trauma that forced him to retire from playing a decade ago.
In a statement, Swansea RFC said Thomas had made the “understandable decision to put his personal health first, with professional support.”
“Heart‑breaking but the right decision”
Speaking about his departure, Thomas admitted the move was difficult but necessary:
“I was incredibly excited to take on this challenge in the summer and am really proud of the progress the team has made. We’ve got a good squad who want to improve and challenge, and all the signs are that we are heading in the right direction. I was loving the job and that makes it even harder for me to make this decision, but it is the right thing for me personally.”
He added that long‑standing issues linked to head trauma had made it “impossible to give the role everything it needs.”
“Although it is heart‑breaking for me to have to step away, my focus has to be on my personal health in the short term and concentrating on getting a better understanding of the issues, and the right support to move forward. My absolute priority right now is myself and my family.”
Thomas also thanked Swansea RFC managing director Keith Colclough for his support:
“I’ve had lots of honest conversations with Keith in the last few weeks and he has provided unbelievable support. I can’t thank him enough, as a representative of Swansea RFC he has been incredible.”
Club praises Thomas’ impact
Colclough said Thomas had made a strong impression since returning to St Helen’s:
“JT has been brilliant since coming on board and has laid a strong foundation which has been reflected by improved performances and results in SRC this season. However, what happens on the field comes second to personal health, and while we are sad to have to make this announcement, we understand and agree with Jonathan that it is the correct decision.”
He added:
“His personal health is the most important thing and JT needs to channel his efforts into getting himself better. We wish him and his family the very best and look forward to welcoming him back to the club in the future.”
Next steps for Swansea RFC
The club said it will update supporters on any changes to the coaching team “in due course.”
Thomas, who enjoyed a decorated playing career with Swansea RFC, the Ospreys, Worcester Warriors and Wales, is widely respected across the game. His return to the All Whites this summer was seen as a major boost to the club’s ambitions in Super Rygbi Cymru.
