Yup, that's a common occurence. When the lid is removed, a rush of oxygen hits the fire, and it flares up. Some folks will shut all of the vents, about 10 minutes before removing the lid. Once the lid is replaced, open your vents back up. Your temps will still rise, but not quite as badly.
22.5 OTS(H), 22.5 OTG(DA), 22.5 Daisy Wheel Kettle(EE), NBBD, UDS, MUDS, 6-burner gasser