Can't comment on the game, I wasn't there.
I think I've settled on the idea that Sinnott is an okay manager. He does well in some situations, he doesn't in others. He brings in some good players (Walshaw basically got us promoted), but he also brings in some donkeys (Ryan Brooke?). Arguably he should have taken us up a season earlier, but we improved year on year and did eventually get promoted. It's not unusual for clubs too big for their level to get stuck there for 5 or even 10 years. So at least we can give him his dues for that.
As for today...I don't know whether the problem today was tactics, formation, tiredness (we played away midweek, they rested) or what. But if it appeared to be fight and motivation, surely that's down to the players? Win against Blyth and they're one game away from Old Trafford or Anfield. These blokes aren't imbeciles - if they can't be arsed putting a shift in up at some ramshackle ground because they can't make the connection that they might play in front of 40,000+ and earn the club hundreds of thousands in the process, then what can Sinnott do? He's not a baby-sitter. He's a football manager of grown men.