We may have been 10th, but do you think we were going in any other direction than backwards? Our vulnerabilities and weaknesses had been exposed and nothing was being done about it. There are accounts of Pep not being interested in defensive organisation in training and very little attention paid to how the opposition might work set plays and attacks. The evidence on the pitch certainly backs that up.
On the whole we have looked slightly more solid since Pep's departure, but one thing you cannot account for is players repeatedly making the same mistakes once they are on the pitch. Lack of concentration and players switching off at set pieces has been an all-too familiar theme this season. You can coach and manage players and hopefully they will improve, but if they are just not good enough and unable to improve, then you have to look at the player and the person who recruited them. As mentioned, Mousinho was once a very good player, captaining a side in the Championship. Unfortunately, the one thing you can't prevent is aging and old father time has definitely caught up with him. There is a reason why Burton were prepared to let him go for free.