Speaking after the game, The Town boss said: ''It was strange game in terms of obviously being disappointing to concede the goal in the manner we did just before half time from a corner kick.
''That's not us in terms of giving someone that much time and space in the 12-yard-box so that was inexcusable, so I'm obviously disappointed and there's loads of lessons learnt.
''I won't be too down on them, we can keep going on but I think we're working ever so hard to improve the group and its obvious where we need improving.
''I keep telling everyone there's a complete difference at this level technically and physically and thats been our achilles heel and we're trying to address it.''
Asked if he felt players needed to leave to help him address this, Bignot said: ''Listen, footballers at the end of the day are used to moving on and I'm sure no footballer signs for a football club and really has that reality that he's gonna be there for five, six, seven or eight years.
''It's the normality in football that players come and go but the group we've got has got us to a level but if we want to go to that next one, we need to bring players in and we're trying to because like I said, the difference is the technical ability of this league; how they keep the ball.
''Why do you think its disappointing? Ten players behind the ball and if we're already struggling, that's a problem and you're gonna struggle even more if you give teams goals.
''When you talk about the home record, the onus is on you so if you see how Exeter set up today; they sucked us in and broke quickly.
''How physically quick where we? How many players could cover box to box? How good were they technically? I'm not going away from us but how much controlled possession did we have? Its the hardest thing in the world getting into goalscoring opportunities and creating chances from it.
''Up until the third goal, they scored off a corner, they scored off us actually giving the ball and saying 'here you go' and actually having a a shot on goal, and the third was a moment of brilliance.''
Speaking about the prospect of new signings before the January transfer window once again, Bignot said: ''Listen, we're working tirelessly, we're gonna be actively seeking every day to try and improve.
''We've got irons in the fire and hopefullly we'll get them in before the close of the window.''
Watch Marcus Bignot's full post-match press conference below.