Thanks for the review video - I had also noticed how you improved for the last couple of laps. Improved conditions? Improved confidence? Improved body? Whatever the reason it was good to see! On the original fall - we cannot see what you are doing with the bike controls so assuming you are like the person in front...the front wheel normally slows due to having to cut through the mud so apply some back brake to keep the bike upright and in line (can be a problem on-road going around a corner, but in mud it works!).
Congratulations to you for getting right back into racing a day after you fell. Things sure do get muddy do they offer showers at the race or do you have to drive home covered in mud ?