Are you sure you’re not being a bit over-hysterical about this? “Total disaster”? That seems like a rather extreme characterization of what is being described as a temporary standby measure that will not change Germany’s Energiewande goal of phasing out coal power generation by 2030.
Also, I think you may have misread your source, or your source was inaccurate, when you said that Germany now imports “55% of their energy in the form of natural gas from Russia”. AFAICT, Germany currently imports 63.7% of its total energy (2021 figures). Of its total primary energy consumption, 31.8% is from oil (of which 34% is imported from Russia), about 25% AFAICT is from natural gas (of which 55% is imported from Russia—which may be the figure you or your source misunderstood), 9% is from lignite (brown coal), 9% is from hard coal, 15% from renewables, and the remaining approximately 10% from nuclear and others.
So ISTM that what you think is Germany importing 55% of its total energy as natural gas from Russia is actually Germany importing 55% of its natural gas from Russia, for a total of about 14% of Germany’s total energy provided by imported natural gas from Russia.
Germany also, as I noted, gets about 11% of its total energy (34% of 32%) in the form of imported crude oil from Russia. Adding up to a total of about 25% of all German energy use derived from Russian imports.
Which is a significant amount and I’m sure that right now the Germans are wishing it were less, but it is nowhere near the 55%-of-total-energy figure that you were imagining.