[palish]

Do nothing. This isn't your responsibility, and you're risking your job by going behind the back of the most senior programmer.

[mariuolo]

Perhaps I've grown cynical, but I second the suggestion to shut your trap.

First of all nobody loves Cassandra, especially because it shows them they were wrong. Moreover, the moment something will happen you might be caught inbetween the shitstorm exactly because you mentioned the possibility and hence becoming suspicious yourself.