I read this in my Bible reading plan (thank you, M'Cheyne) from Luke 22.54, "...and Peter was following at a distance."
After a promise to be faithful to the end.
After a pledge of his very life.
After a swipe at the servant named Malchus, though only getting an ear.
After a promise that his faith wouldn't fail, though sifted by Satan.
After all this, he followed at a distance.
Because it's safer to follow Him at a distance - His demands aren't as sharp, His commands aren't as clear, His agenda not as consuming.
But that's just me thinking thoughts...