PC: Coup d'Etat in Sweden in 1918

So, the scenario is as it follows:
  • Operation Michael is a success, and the germans capture Amiens. The Allies, though forced to fall back, manage to stabilize the frontlines. They stay on the defensive, waiting for american reinforcements.
  • Germany, in their position of strenght, try to force the new Swedish Government (elected in September 1917) to resume the iron ore shipments which, AFAIK, had been reduced by that new government. The swedes through refuse. The germans continue to pressure the swedes all through spring and summer, with support from the Swedish military and the National Party.
  • The american reinforcements arrive in France through the summer, and an offensive is launched in September, leaded by those fresh reinforcements, on the Meuse-Argonne zone. The offensive though is a failure, and the germans maintain their lines. This adds pressure to the Swedish government, with the National Party and the military pressuring them over fears to have choosed the losing side.
  • The first of November the Swedish military, with support from the National Party, launches a coup and the Swedish governmenr is imprisoned under charges of treason. That same day, in the evening, a large protest takes place in Stockholm. The military is sent to dissolve the protest. It's a massacre
  • All along Sweden, workers rise up in support of the legal government and in protest of the Stockholm Massacre. They form worker's councils, and the uprisings quickly take a leftist character.

So, how plausibe is it? I'm in no way an expert nor in WW1 nor in Swedish politics of the time, so there may be holes in the scenario. If there are, please tell me to make it all more plausible.
 
While the politics of the idea is... interesting, after the unrest caused by the food shortages and precisely because of the fear of Communist/Socialist agitation (Especially after the recent example of the Finnish and Russian Civil Wars) I doubt the military would be so silly as to launch a coup (and get enough of the rank and file and lower officers to support it) to impose a government that would re-align them to Germany, thus cutting them off from their recently re-obtained flow of grain imports. Now, flip the script: say, Britain and the US insist on keeping the import "rations" in place despite Sweden's agreement without showing signs of success, producing the Worker's Councils forming FIRST and the military being called up (and demanding a more pro-German policy as the price) from the Swedish government by forming an "Emergency Committee" under the National Party by pointing to the examples of the White sides of the Russian and Finnish wars as models for successful action, and you're more likekly to see the sympathy from the middle and traditional classes needed to give the new government the legitimacy it needs.
 
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