Before you only needed to win two timers to explode the whole thing.
I am still highly skeptical this is a problem - reinforcing a station multiple times requires significant effort well past the point of anything that can be considered trolling, and is more than the effort the defenders have to do to form up for an single armor timer. But if it is somehow, maybe the solution is to not disable structure services after the armor timer.
But I’d really like to see some numbers or even anecdotes that this is even happening. From the outside, it seems an awfully labour intensive tactic to keep up. Structure bashing isn’t fun, and if you are going to go to the effort to reinforce something even once, you probably have the intention to follow through. I see how you might abort if something you can’t handle shows up to defend the station, but I can’t see anyone wasting their time doing that more than a couple times before they give up and going after another target. You are literally wasting more of your time, not to mention risking significantly more, with “troll” reinforcments than the target you are trying to damage.