Why does Naval EC keep crashing/disconnecting?

Naval EC is awesome… sunk time and money to be able to play it on the weekends, but the last two times we’ve been into one we get server disconnected.

Is someone crashing the server on purpose? I ask because this very last time I rocked a Russian kid twice in a row, and 30 seconds later the server crashes. This never happens in other game modes, just Naval EC… and considering it’s up to a 3 hour time investment, it’s particularly garbage to have it crap out right when you’ve made enough SP to spawn something cool.