See this is where we should be drumming it into our players every week. Convince them that it's not us that will collapse when things get tough, and that it's the other teams.
Confidence is not only about being cocksure when you win. It's also about believing you will pull yourself through when you're 1-0 down and everything is going against you. And if you do lose, that it's not through lack of effort or approach, but it was just not your day / the ref was a cunt etc.
It's all in the mentality (work), preparation (tactics) and on the pitch (quality/desire). The quality of the players isn't in doubt, and hasn't been on numerous occasions in the past (spending or not).
The one thing which may tip the balance is if we're running on empty at Christmas, with injuries, and Wenget decides not to strengthen.
It's in our hands (in the most part), fucking do it!