My philosophy for a result like that:
- teams occasionally have an off day
- privately cuss and swear at Nordeus (optional for a real troll result)
- today's game has gone, no reason to replay it
- look at the teams performance to see what, if anything, needs to be done
- get the players prepared for the next one
Most of the time I can put the same squad out for the next game and win 4-0