Nathan Brown's upcoming role with St Helens had no bearing on Huddersfield's poor run of form or his departure from the Galpharm Stadium, Giants managing director Richard Thewlis told Boots 'n' All.
Less than 24 hours after Huddersfield's 33-6 Challenge Cup semi-final defeat to Warrington on Sunday, the club announced Brown was leaving with immediate effect, with his assistant, Paul Anderson, taking the reins.
Anderson was due to take over at the end of the season but after a run of just one win in nine Super League and cup games Thewlis opted to act now.
"Our form over the last two months has not been acceptable," he said. "We're out of the Challenge Cup and it was a huge goal for us to get to Wembley.
"Results and performances have forced our hand and unfortunately Nathan's had to move on early."
Giants started the campaign well but, with the club top of the Super League table in April, Brown announced he was leaving for St Helens at the end of the season.
Some critics have pointed to his upcoming move as a distraction which affected Brown and his team - but Thewlis insisted that wasn't the case.
"I don't believe those people were right," he said. "Those people don't know Nathan Brown was in here every day from 6.30 in the morning to 6.30 at night.
"Nobody could have done more than him - his focus has been solely on Huddersfield Giants. There are lots of rumours flying about, which are totally inaccurate.
"We didn't want this day, Nathan didn't want this day but the St Helens factor had no bearing on what's occurred."
The highlight of Brown's time at the club was the 2009 trip to Wembley for the Challenge Cup Final and his successor, Anderson, said his former boss remains highly thought off at the club.
"A lot of players here had a lot of time for Nathan because he's a very good coach and he's a very good bloke as well," he said. "There are not a lot of people who have met him who haven't got time for him. He's left a lasting impression on this place."
Anderson must now focus on getting the Giants back on track and securing a play-off place, with his first test a home game against Wakefield on Sunday.