Sounds great but it may well be because of the hard work you did during the day. This could have upped your general metabolism - in the same way that exercise does - which is why we are encouraged to exercise every day. It would have been interesting to know how much hard work was done (measurable in calories? - probably not, and what you BS was before you started.
I wouldn't take this as a green light to build chips and curry sauce into your diet. That way, madness lies, but like you say - a bit of a blip.