Actually, the founders did have the foresight for including something to deal with the installation of an illegitimate president, or any other tyrannical/lawless portion of the government:
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.
Not quite; there is a huge difference between the single [debatable] State’s right of secession and the definite Contra-Constitutionality of all three branches of the government.
Consider TARP & ObamaCare; legislative nightmares so contrary to the constitution that it should make you sick.
Consider the USSC/Judiciary’s tyranny & on-the-fly modification of the Constitution: the “commerce clause” being applicable to INTRA-state commerce, the shredding of the 4th Amendment by allowing no-knock warrants & warrantless searches, the virtual repeal of the strictures the 5th Amendment placed upon eminent domain, the super-legislative powers they exercised in Roe v. Wade...
Consider the refusal of the [federal] government to address the issue of the invasion of AZ (as required by Art 4, Sec 4).
IOW, ALL THREE branches of the Federal government are demonstrably contra-constitutional. No if/ands/buts, they are a monster that *will* cause bloodshed, one way or another.
Which is a near impossibility when the jury in this situation is as corrupt as the usurper whom they protect.