The profligate Keynesian spending might have actually had a positive effect, making Obama look like a genius, however any movement it might have given the economy was squashed flat by the Krazy Kenyan's attempts to ram through the uber-tax-hungry social agenda legislation.
Any business analyzing the HCRA impact and the spectre of Cap-n-Trade, plus other radical environmental policies, hanging over their heads would naturally pull back. No amount of stimupork dumped into the economy short-term could make up for the obvious long-term costs of the social stuff.