First off, the global warming debate is not just about temperatures. It is also about resource use, pollution, waste, contamination of environments, etc.
Secondly, the effect of this 'mini ice age' will last a scant 10 or so years. Call me crazy but it doesn't make sense to burn more fossil fuels and continue to cause potentially unrepairable harm to our environment to optimize for a period of 10 years of relatively cool temperatures.
If the scientific community agrees that warmer temperatures are in the planet's best interest, I'm sure there is a safer and more effective way to bring that about then the massive amount of pollution and CO2 we are currently pumping into the atmosphere.