This is actually quite plausible and lets them put the coup in a nice legalistic form.
And of course, all the other classic coup activities happened. If it happened in South America everybody would immediately call it a coup.
Two divisions of troops in the streets. The troops were gathered from all 50 states so the governors were put on the spot as to where they stood.
Seize the radio and TV station (metaphorically) Freezing Trump out of all social media, refusing him the ability to address the nation. Hard censorship on the issue.
They Generals coordinated with the coup leaders that they would ignore orders from Trump.
Mass arrests of the opposition.
A firehose of propaganda followed by massive domestic spying.
Good post.