The EMM had nothing to do with Missouri State Guard, They would have been affiliated with the MSM as they were both were enrolled in the service of the pro-union Missouri Government. I would think "In actuality they would oppress local Unionists who complained to no avail to the Union Army." is a gross mischaracterization, as the EMM was statewide with every county having organizations and have never heard it represented the majority of the EMM statewide was a problem at all.
I know from reading the case of Odon Guitar, who seems to have been a Loyal Union man and guerrilla fighter, simply enforcing the law fairly would lead radicals to complain, as they thought they should somehow be free to persecute their neighbors illegally. While in St Joseph he had some criminals arrested for illegally robbing and burning houses, by all accounts they were guilty and convicted, but the pro union residents complained and had him replaced for simply enforcing the law against radical leaning criminals.
And not all EMM were ever dismissed, but numbers of them then went into PEMM and MSM as well.
The Paw Paws as you seem to be using it, was one unit out of 85 regt, 16 battalions, and 33 independent companies of the EMM.......so hardly would reflect on the EMM as a whole, or as I said earlier statewide. Also curious which units you are referring to that fought alongside Price........the one unit that did flip, Coon Thornton's did so before Prices invasion, never fought along side Price as all as he was put down before the invasion ever occured.