Saskatchewan Roughriders quarterback Trevor Harris is known for keeping a relatively stoic presence on the field and the sidelines no matter how things are going, but even he has his limits. After an interception by Stantley Thomas-Oliver in front of Riders receiver Dylan Djete late in the fourth quarter all but snuffed Saskatchewan’s opportunity for a comeback, TSN cameras caught the 14-year veteran yelling into his helmet as he left the field.…