Cronulla Sharks interim CEO, Bruno Cullen, has resigned on Monday.
Cullen's decision comes on the same day that the Sharks reversed their decision over the four sacked staffers in the wake of the ASADA investigation, offering a public apology and extending an opportunity for their return.
Fairfax Media understands that Cullen was considering finishing up his tenure at the Sharks but the process was accelerated when the directors of the club made its decision without consulting him.
In a stunning backflip, the Sharks board announced on Monday they have overturned the decision of the previous directors following their own review of the Shire club.