The score is 15-12 with 49 seconds left and B.C. has the ball at the one yard line. Why didn't DB call a timeout? B.C. ran the clock down to 32 seconds and scored. If a timeout was called the Riders could have ran 2, maybe 3, more plays to try and score.
What did DB think B.C. was going to run out of time. No matter what B.C. was probably going to score at least a field goal and from the one yard line a touchdown was pretty much a guarantee. This was just very very poor coaching in my opinion.