Geologic systems are more complex than this. Analyzing something like this as though it were a single system is wrought with the dangers of miscalculation.

You could locally release stresses on an incremental, short term basis this way in a local system, while at the same time increasing stresses on nearby systems which could fail even more spectacularly, especially if the increasing stresses are being moved from a less dangerous system to a more dangerous system.

I'm not suggesting the above is true in this case, but that you need to cast a pretty wide net with increasingly unknown (and perhaps unknowable) variables as you start to inject real changes into a local system and try to predict what those changes will actually do.