I understand this probably wasn’t the “correct” method of escalation and he didn’t properly follow the chain of command, but this seems like just a petty move by this administration. This is a case where slap on the wrist is all that was warranted.
Also, I googled Thomas Modly to see if he had any military experience or any experience that would be relevant to have. While he does in fact have Navy service under his belt (the fact that this is surprising to me is insane) the Wikipedia entry for him was apparently altered at one point.
This is what pops up while still on Google, going to the actual Wikipedia page reveals that it’s been fixed already.