"It may seem tough, but this isn't the culture that we accept at our club.''
The decision, which was communicated to the playing group on Friday, came after NRL forwards Corey Harawira-Naera and Corey Horsburgh were caught drink-driving.
Harawira-Naera returned a mid-range reading after being stopped by ACT Police on Christmas Eve while Horsburgh's blood alcohol level was considered low-range when he was tested in a separate incident on January 3.
Both players are scheduled to front court in the next few weeks and Stuart promptly dropped them from the senior team.
"It's not my job to keep a position in this team – it's their job,'' Stuart said.
"And they haven't given themselves a real good head start.
"They know it was a bad choice and very disappointing to say the least.
"One thing in the NRL is, there is always someone to take your spot.
"I'll leave them to take care of their court case because I've got other players that need to be ready for round one."