I didn't downvote you, however the problem with your reasoning is that every country has literally hundreds of devices scattered around and measuring every day data that could make someone unhappy. The current US administration (which I deeply dislike as well) would gain nothing but the great risks involved should the agents be caught with the pants down. While they could well sabotage a few stations, there are so many around that hitting all of them is plain impossible. If we accept your theory, we should also take into account Russia as well since this happened about two weeks after that nuclear incident, and having sensors measuring radiations far away from the event would make them unhappy too. I'm assuming that station has radiation sensors on board although their presence has not been reported because they're cheap and it would be stupid not to include them especially in that area. Same problem as above: let's say some Russian agents managed to destroy that station, how would they deal with the hundreds or thousands other stations doing similar measurements around without risking a lot of PR damage if caught?

To me, assuming it was intentional, it was either someone needing spare parts for his projects (kidding) or someone who didn't want measurements to be taken in that area because they are involved in illegal dumping of pollutants or similar things.

edit: knowing the exact type of sensors on board would help a lot to find the motivations in case of deliberate sabotage; eg, a magnetometer can detect anomalies in Earth's magnetic field, such as those produced by big ships or submarines passing by.