The FR data is garbage; about all you can make up from it is that they climbed into IMC, turned 090, got the ground speed up to around 300 kts (~560 KPH) and bounced around 6000 feet/2000 meters for a while, then put the nose down. You might see wild accelerations in the (garbage) fine-grained data, but you can't conclude much more than that. Somatogravic illusion?