[Jammin]

-1 donor strike but maybe +1 a warning, based on what I can see here.
If no staff are on then it's kinda donor's domain in a way. It sounds like the mute/gag may have been warranted, and the ghosting has a follow-up ban request. Albeit, may be good for someone from staff to guide @Singe to the donor guidelines, as it would be better to ping/summon staff before resorting to donor kicking.
But, it sounds like the actions were for cause.

Now, if staff were actually online on server, that changes everything. But I am either blind or I see no evidence of that.