Manager Terry Skiverton has slammed Yeovil's first-half display in their 3-2 defeat by Bournemouth in the second round of Johnstone's Paint Trophy.
Two strikes from Marc Pugh and an own goal from Bondz N'gala left the Glovers 3-0 down at the break.
Skiverton told BBC Somerset: "It nearly cost them their careers.
"To turn up like that was disgraceful. There could have been a few who never played for me again after that first-half performance."
He continued: "I was fuming, that's the first time I've lost it this season. I'm still shaking now because I was ready to have a fight tonight and that's not like me."
The Glovers saved some face in the second half with goals from Max Ehmer and substitute Steve MacLean, whose header also hit the post in the dying moments of the game at Dean Court.
"They seemed to respond in the second half," said Skiverton. "It just shows you when you bring someone like Macca (MacLean) on with a bit of spirit and character, he's had to drag everyone else through in the game.
"For me that's the positives that I can take out of the second half. But the first-half...I was disgusted."
Yeovil travel to Colchester in League One on Saturday sitting 21st in the table with just two wins all season.
And Skiverton has warned his players that he could make drastic changes to his squad.
"We're changing the way we play now," he added. "We try and put on performances for our fans but now we are going to go a bit nastier and I'm going to pick the strongest players to get about the pitch.
"You watch the team that comes out on Saturday. If they're in the team then they must be doing something right. If they're not in the team they've got to work harder, simple as that."