MrPants-
Haircutting the public spending budgets by x% each could never have created the conditions for recovery. Only a systematic cull of non-functional governmental departments, complete with a review of red tape, business regulations and laws, and coupled with a boost for industry in the form of a long term reduction in taxes on businesses could have turned things around.
No, deregulation is what caused the financial crisis, and corporate taxes are at the lowest point for decades; many international companies pay little or no tax at all.
Your suggestions are exactly what we've already been doing over the course of three decades, and it has given us wealth and income inequality not seen since the 1920s, corporations paying little or no taxes, collusion between corporations and government, and the financial crisis.
Instead of doing the same thing but worse, we should be doing something different. Namely, demand-side reforms which will put money in to the hands of struggling households who will spend the money out of necessity, rather than throw more money at corporations and banks, who are still holding cash and neither lending nor investing.