well it did break on the right this morning and why the flow out the right side increased as it did.
Even now you can see it's attached but lava flows over it from time to time.
The hole's getting bigger and I expect that top section will break at some point. But then again, every time lava splashes over that top strip, it adds a little more lava to it as it cools. It'll be interesting to see what happens there.