Nick Fozzard has resigned from his post as Commercial Manager at Castleford.
His wife Sarah has also resigned from her post as Marketing Manager.
Interim CEO Steve Gill said: "It is with disappointment that we confirm the departures of Sarah and Nick from the club. I’d like to take this opportunity to thank them both for their efforts.
"The Membership scheme has been a fantastic introduction to the club and Sarah played no small part in its delivery. We wish her well.
"Nick’s transition from player to commercial manager was amazing to see. We hope that his next venture in life is prosperous and one that gives him fulfilment.
"The aim of all remaining staff is to roll our sleeves up and ensure the backroom team are in a position to make the most of the positive start to the season made by the players and coaching staff."
The resignations follow on from last week's departure of chief executive Steve Ferres.
Foxy Bingo have challenged the stars of the Super League to name their squad in 30 seconds. How will they fare in the Foxy Bingo Captains Challenge?
As the big split looms, Forty-20 editor-at-large Tony Hannan ponders the impact of the Middle 8s...
Wigan coach Shaun Wane has highlighted the role Warrington's supporters can play in their team's success, by highlighting the intimidating atmosphere they create at the Halliwell Jones.
Hull FC owner Adam Pearson has issued a stern warning to the players at the club, slamming their recent performance in the defeat to Wakefield.