A Scottish Football Association disciplinary tribunal issued Gemmell with a censure after he admitted ''making comments of an offensive nature on Twitter in relation to Rangers FC and Alistair McCoist''.
Gemmell hit out at McCoist on the social media network after the Rangers boss criticised the decision to rearrange his side's League One away game against Stenhousemuir to the Sunday of a week in which they had also played at Dunfermline and Airdrie.
Gemmell's Twitter account, which was later closed, read: ''McCoist is a p****, game against Stenny should be midweek?... Why, so we are f***** after working all day whilst your boys can lie and get a massage for three days before checking their £5k a week wages are in? Away and f*** off #Embarrassing.
''Can't wait to get a massage after training today and a nice healthy meal after too .... Actually I'm working 2-6, probably with a pot noodle.''
McCoist hugged Gemmell after his side's 2-0 win at Ochilview on January 5 and later laughed off the comments.
''I get called worse in the house to be honest with you,'' McCoist said. ''It was probably a bit ill-judged but I'm certainly not going to throw the toys out of the pram."