No. The recovery hasn't stalled because of looming tax hikes. The recovery has slowed down because economic stimulus programs like the First-Time Homeowners Tax Credit and Cash for Clunkers are no longer in effect.
Edit: Sorry, but I reject the notion that the wealthy are so vital to economic strength. Any successful businessperson knows that the key to a healthy business is a strong customer base, and there aren't nearly enough wealthy people to do that. Our economic recovery is slow because rich people hoarded stimulus dollars instead of reloaning that money to small business. If the rich are too self-centered to help our country grow, we should raise their taxes and recoup our bailout funds.
People who peddle personal opinion as solid fact are the whole problem here.