SP said they had used the 432 system with 10 men last year and it worked relatively well so decided to go with that initially, then changed it to 351 after the equaliser as it wasn't working.
Allsop isn't the finished article but I don't think he has been so he has been so terrible he warrants dropping. I trust Oggy's and SP judgement who see them both in training everyday, it could be Chris Dunn all over again.