Was Herm fired because Pioli wanted to or because of the pressure from the press?

[Fritz88]

This can be a better title:

Was Herm fired because Pioli thought it was the right time or because of the pressure from the press?

I have come across many articles that are reprimanding Pioli for keeping
Herm in the dark for so long. These articles surfaced almost all within 2-3 days from each other.

Now the question is. Was Herm fired because Pioli can't keep him waiting for so long and he got into hot water with the media or he planned to fire him that day anyway?

To me it seems that perhaps Clark told Pioli to either fire Herm or let him know what is going on.