Not enough information to vote.
With a tight template rack the 10 ball shouldn't move unless hit by another ball. The other balls don't track towards the 10 ball unless there is a strange kiss and usually a lot of ball movement.
I'd say if, somehow, the balls kissed the 10 ball in repeatedly, such as the four rail corner balls colliding and cutting it into the corner, then that is a clean 10 ball break. While statistically unlikely it isn't technically impossible and if it happened in such a way I'd be ok with it.
If the 10 ball keeps moving towards a corner after a break, going in directly several times, and being timed in the others, then it is a problem with the rack. I've seen triangle racks and some poor templates with mismatched balls result in the 10 ball tracking towards the corner. This is a bad rack.
Now, just because it is a bad rack doesn't mean it's rigged. Rigged to me implies deliberate manipulation. It could just be an unintentional bad rack due to lack of competence or difficult racking conditions.
In summary, I withheld my vote because there just isn't enough information as to how this played out.