Let's assume it isn't, and neither is your approach of "When the witness said straight, he meant perpendicular". What are we left with? We're left with taking all the witness statements with a pinch of salt, because any individual one of them could be erroneous or misinterpreted; and we're left with the radar tracks, the FDR output and the physical evidence, all of which are consistent with one plane hitting the Pentagon on the SoC course. So, if you want to throw out all the witness testimony, because you think it all supports NoC and impact and these are inconsistent, that's fine; you're throwing out all the evidence that can be interpreted to suggest anything other than the generally accepted narrative, and left with evidence that unanimously supports it.
Dave