The early exit from the Scottish League Cup has been confirmed by a points deduction.
Bushiri played in Wednesday's draw with Morton despite being booked in the previous games.
The Greenock side have been awarded a three point win by the SPFL.
With a game to go, Falkirk and Morton are on seven and four, respectively.
Falkirk will hold on to the top spot if they don't lose to Clyde.
Six points won't be good enough for one of the three best runners-up spots in the last 16, which will be made up of the eight group winners and Scotland's five European representatives.
In Tuesday's 2-2 Group H draw with Forfar Athletic, Stranraer lost a point as they also had an ineligible player, Paul Woods, in the game.
The League 2 side have been fined £1,000, of which £500 is suspended until 30 June 2023 pending any further breeches of player regulations, while Hibs have been fined £5,000 and have their suspension lifted.