Sorry, Mamya, but it just ain't so. "Pants" isn't "one of the following words" it is solely part of the answer, not the clue. And " feet as hot" anags only "seat of the".
In your version we'd have to understand (1) "hot" as doing double duty--which wd be fair enough, except that (2) we must then understand "hot" as signifying "pants", as you imply--and which, quite flatly, it does, not. And then (3) having made that impossible leap, accept that "pants" in turn can mean anag---which is news to me, but even if it's acceptable as such, it is step 2 that is simply absurd. "Hot" can no more stand in for "pants" than can "fast" for "car" or "drop" for "dead". Not for the first time recently, the Times's setters have gone way off limits.