Gainsborough Trinity chairman Peter Swann has threatened to quit following abuse from supporters in their 2-1 FA Cup defeat by FC United of Manchester.
Swann responded to abuse aimed at him and manager Brian Little during the second half of Saturday's match.
In a message on the club's web forum Swann said: "I am disappointed that I have risen to comments and abuse, when I should just let it go.
"I can't listen to the vile abuse and language any longer, it disgusts me."
Swann, who said he would make an announcement on his future on Monday, added: "I can't say I was very proud of our performance and we deserve stick, but I am ashamed that FC United had to hear that today."
Trinity went ahead in the second qualifying round tie at Gigg Lane through Lewis McMahon's 40th-minute penalty following a foul on Jefferson Louis.
But their lead lasted only three minutes before ex-Trinity striker Glynn Hurst levelled for the home side before netting the winner a minute after the break.
Boston United also exited the competition after a 3-2 defeat by Worcester City at York Street.
The visitors were 2-0 up inside 20 minutes through long-range strikes from Mark Danks and Tom Thorley.
Marc Newsham and Jamie Yates pulled the Pilgrims level in the second half, only for Danny Glover to grab an 89th-minute winner.
Simon Mowbray gave Stamford the lead in their tie at Blue Square Bet South side Thurrock, but the Daniels conceded twice in the dying minutes as they lost 3-1, while Sam Mullarkey was on target as Lincoln United lost 5-1 at Coleshill Town.
Lincoln Moorlands Railway are in the third qualifying round after a walkover in their tie against the now-defunct Ilkeston Town.