O.K. that makes SOME sense to me as well BUT the unstated gamble for CN is the likelyhood of them losing the suit action versus a win for them.
Should they lose this suit to the facts already established of crossing signals being partially obscured by weeds, train horn NOT being of the later design mandated by TC and the crossing signs being of an older confusing design, taken in context with NEW stuff that will almost certainly be offered into evidence such as the speed the train was operating at, when the train horn was activated prior to the crossing, previous death at that same crossing which would have certainly resulted in a local public demand for more upgrades at that crossing which did not happen, etc., etc..
ALL of this stuff already puts CN in a very precarious position which could lead to this suit and it's result, only serving to cut them off at the very knees if it's not a win, win for them.
If they actually pay lawyers to come up with these types of decisions; I need to get in on that game!