You could argue as I have done above, that we didn't need a spark or more momentum. I don't have hindsight armour like you, but surely you can imagine us getting overrun in the middle if we'd have brought Duffy on (not that I'm sure it would, but it could have).
RE: beating ourselves with sticks. Whether you say our manager is lying or not, you have implied it which is very negative. The same defeatism can be found with you being sure our manager and fitness staff are making nonsensical decisions.
I made it clear I was saying we had no right in regards to our wage bill, which is the variable that most closely maps footballing success. What I actually meant is that because we are overcoming this variable, we are doing so much else right (tactics, signings, subs, work rate) and should praise our team rather than insult our managers intelligence.