Metro woes

After the gym tonight, I climbed onboard the Yellow Line as usual for the quick trip to Mount Vernon Square where I waited to transfer to the Green Line. And then something strange happened:

Not one, but three Green Line trains came through the station and they were all packed solid. There was no chance to get on. Not only that, but two of the three trains were 8-car trains, the first time I’ve ever seen that on the Green Line.

Finally, after about 30 minutes total, a Green Line train came through that had standing room and I was able to get on board.

But seriously, what was going on with the Metro this evening? Are they now doing longer trains at less frequent intervals, or what?