Bearfoil,
The Airbus, (this one) has no Artificial Horizon
You seem to be implying things which are aimed at misleading.
In this Version of the 'Bus the Artficial Horizon is provided by the IR Part of the ADIRU, shown on the PFD's plus the Horizon provided by ISIS.
Yes it doesn't have a mechanical one but three electronic ones and none of the ACARS messages suggests they were u/s.
Ans a mechanical one is much more prone to tumbling in turbulence or upset than the Ring Laser gyros.
I still have some difficulties understanding what you are trying to achieve here ?!