Heres a small theory
Im writing a Whole chapter to a theory and im trying so hard to find as much facts to back it up as possible
until then, heres a small theory

What if, When Logan says FALSEHOOD, hes sensing Deceits presents
If thats the case
The that would mean Deceits always been watching
Witch means Deceit would see everything Virgil does
SO maybe, he saw Virgil getting toooooooooooo comfortable with the Light sides
And he sent Remus to temper with The relationship between Virgil and the light sides

Possible?
Who knows