If I caught that correctly, this ”Sam Spade” character referred to the Taco Bell incident occurring ”the day before [Eric’s] death”. Assuming this is true, it would imply that the poster knew the exact day that Eric died, when even the authorities appear to have no such knowledge (due to uncertainty resulting from the state of decomposition). While the poster’s truthfulness in general is questionable, this embedded implication about their knowledge could be a Freudian slip.