Look like emergency descend out of FL190, turned 90° off track soon after initiating the descend (aviate), wandered around a bit before regaining original track (navigate) and started the 7700 squawk (communicate)
With Limoges airport within range for diversion, however, climbed back to FL90 and continued to destination.
Pressurization issue jumps to mind.
Beats me why the 7700 is maintained, while things seem to stabilize and the normal flight (although lower cruise level) is resumed to destination (almost 1 hr. flight time)
