I think it would be a very flawed or rather strange-loopy simulation, if it allowed for simulated individuals to gain insight into the fact that they could be simulated. Except of course, this is actually some factor that the hypothetical simulation is making allowance for.
The whole "in silico" philosophy aside, it…

there's no such situation with only one option.

Look, before emotions slosh up high... I think you DO have a point and nobody here - I think - would dismiss such situations as easy decisions. As GDSmith said above ... easy if you have the courage, but being courageous is not an easy thing to be. And certainly we can discuss here from a very comfortable distance to…

It's basically all about responsibility. No authority can actually take responsibility from your shoulders and whatever you do under whatever circumstances - it's you having to take the responsibility. Even soldiers end up with post-traumatic stress disorder because it's not so easy to wipe away responsibility.

"... if you don't do it, somebody else will ..." that's about the most stereotyped excuse brought forward in those cases. It however supposes that "somebody else" is just as gullible confronted with authority than you are - which might be false after all.

my favourite would be "Science Genius Girl" by Freezepop