When did I deny it? It is what actually transpired when Laporte died that is at the heart the problem. Saying that it was accidental seems to be problematic for some, even if it is what happened.
While it is possible to accidentally choke someone to death- even the US legal system recognizes this- it is:
1) very difficult to successfully and legally classify a strangulation death as "accidental" and
2) an alien concept to most Americans that an accidental death comitted in furtherance of criminal act would not be considered murder- see my earlier post about felony murder- absent some kind of legal plea or jury shenanigans.
All of which does not diminish Umbran's point: in the moral/ethical context of the conversation, continuing to characterize the death as legally accidental looks like rhetorical minimization, and thus, extremely shady.