To tough titty means to have no sympathy for the situation another person is in, and in this context the speaker has no sympathy for the people in power if their plans don't go well.
Context: "If that didn't go well with the plans of the people in power, then too bad for them." Claim: "If that didn't fit in with the big boysplans, tough titty."
Considering the context, is the claim true, false, or unknown?