Why are these other scenarios regarded as 'possible'....yes, 'likely'.....very much no. So we now have:
Aligned using the wrong co-ordinates (what about the warnings that would ensue?)
Moved before switching to align, then did not align properly (OK....why?)
Why do you hang on to these theories when the overwhelming wealth of evidence, and it fits in with subsequent tracking, is that they simply neglected to switch to Nav mode and remained in the heading mode they used to get to Nome? Very likely, very plausible, and I have to admit I have done it myself, several times, it is easy to do, and I have many times picked up other people for it. So why go for unlikely theories when this one was regarded as the most likely and most easy to do, and it fits perfectly with the tracking on the day?