Windshear on initial approach; likely from a microburst; caused the Flight Crew of a CRJ200 to momentarily lose flight path control. They diverted to another airport after regaining control.

Narrative

While attempting an approach to Runway 14 in ZZZ; the wind shifted in the opposite direction. Winds were now 320/16G22. We elected to stop the approach and vector around for an approach to Runway 32. At about 2300 MSL; we started to configure the aircraft for the approach. 200KIAS; flaps 8; then 20. Just prior to intercepting the glideslope; we encountered a severe windshear where our speed increased from 190-200 up to to 280+ then immediately dropped to around 150 KIAS; maybe less. The aircraft was tossed into left and right banks up to 30 degrees and nose up/down 20 degrees. The airspeed fluctuated severely; and the aircraft was uncontrollable for a period of 6-8 seconds on several different occasions throughout the next 2 minutes. We had IVSI indications of as much as 4400FPM DOWN and we were only at 2200 MSL. The First Officer was making call outs of what the indications of performance were. I was hand flying. Max power was applied and maintained for most of the event. We notified the Tower we were climbing out after we exited the microburst; turned westbound and headed for a diversion airport where the weather was A LOT better.