The speaker is not fine because they are stealing pizza which is wrong and also because they are sneaking around instead of just leaving with everyone else
Consider the statement "While everyone was getting ready to leave and they weren't looking, I snuck the rest of the leftover pizza in my purse and slid out!". Based on this "I felt totally fine as I snuck the leftover pizza in my purse and slid out when everyone was getting ready to leave" a true statement? Yes, no, or I don't know?