The Bombers denied reports in The Age that they had contributed an estimated $25,000 of the total, leaving Thompson to cover the remainder.
Thompson faced a ban from attending AFL games if he did not pay the fine, which was three weeks overdue.
The former interim coach was slapped with the penalty for his part in the Bombers' 2012 supplements program, which has since seen 34 past and present players issued with infraction notices.
It has also been reported that Thompson was seeking a substantial payout from the Bombers after he was told a fortnight ago there would be no role for him at the club next year.
The 51-year-old reportedly met with Little on Tuesday to discuss a disagreement over disparagement clauses in his exit agreement.