A lot of legal constructs are defined by intent, and intent is always something that is potentially hard to prove.
At most the obviousness should the burden of discovery on them, and if they have no records or witnesses that would demonstrate the intent, then they should be in the clear.
> I would start to collect a LOT of paperwork documenting that the casting selection was done without a hint of bias towards a celebrity's impression.
IMO having records that explicitly mention SJ or Her in any way would be suspicious.
At most the obviousness should the burden of discovery on them, and if they have no records or witnesses that would demonstrate the intent, then they should be in the clear.
> I would start to collect a LOT of paperwork documenting that the casting selection was done without a hint of bias towards a celebrity's impression.
IMO having records that explicitly mention SJ or Her in any way would be suspicious.
IANAL