Article 1, Section 10 prohibits certain specific actions by the States. No where does it proclaim any blanket prohibition of "expressions of [State] sovereignty." If it had in fact done so, the Constitution would never have been ratified...
;>)
It was ratified only because the Tenth Amendment was offered for ratification as well. The Tenth was the "deal breaker", the sine qua non of ratification by nine States, which was the magic number.
That the Tenth is ignored today by Hamiltonian aggrandizers and Commerce-Clause imperialists is something the late Chief Justice Rehnquist was trying to bring to an end as his life drew to a close. And he wasn't exactly Roger Taney.