For eg., what was his reason for serving cold food?
Top Gear had hired most of a small hotel for a filming shoot. The shoot went on longer than expected and when they got back to the hotel they found the kitchen was closed. Not exactly unexpectedly since the kitchen open hours were stated.
So the idea that this was somehow a conspiracy by the producer to get Clarkson fired seems like a stretch unless you think he deliberately delayed the shoot so they would get back after the kitchen was closed.