Do you mean that the crew were being familiarised with the rwy 09 app (with a deliberate deviation to show them Juhu)?
Definitely not, more a case of using a developing situation to illustrate possible future problems to be avoided and recovering the situation before any risk to flight safety.
FMC aircraft don’t suffer from ‘radial instability’ on VOR approaches.
Is that the way it is for you today misd-agin ? I have no Airbus experience but when we flew the VOR approach to Mumbai it was PF on HSI raw data and PNF on MAP, no such thing as RNAV approach to Mumbai 09. Take my word for it, the radial needle would dither from side to side, the radial would often appear 'bent' and eventually it was the mark one eyeball that brought things to a satisfactory conclusion. As I said in a previous post, I hope all this has long since been sorted out by now.