But moreover, if (and I say "if") it is true that BP directions did cause the original problem, when the US bigmouths were first jumping on the bandwagon that fact (if it be a fact) was not known, and the assumption that it was BP at fault not either of the US corporations was based on nothing more than prejudice.

As for BP putting its hands up - you know the standard advice given to defendants before courts with the probity of Judge Jeffries, don't you? It will go easier on you if you admit your guilt (whether you are guilty or not).