Germany has no security threat. They can vastly reduce flight time of Tornado if not ground them. With the economic situation they aren't going to buy new jets for years to come anyway.They can’t integrate B61 on Typhoon without it being paid for. That would come from German coffers. Airbus can’t do it without turning over technical data to the US.
Grounding Tornado wouldn’t help anything. The Franco German sixths gen isn’t an option yet either as France would have to be sold on integration of B61 or convinced to offer there own which isn’t realistic.