Do you know what the Resolution of 1780 is?
Here's a quote: " That the unappropriated lands ... shall be disposed of for the common benefit of the United States
That is, not transferred to ownership of the individual new state for its sole benefit. "Disposed of," BTW, means sold into private ownership.
http://www.minnesotalegalhistoryproject.org/assets/1780%20Resolution%20on%20Public%20Lands.pdf
The lands in question were in the NW, with multiple states having overlapping claims. All claims were ceded to the US, to be used for the benefit of the US as a whole, not for any individual state, including newly formed states within those territories.
Thanks for bringing this support for my position to my attention!