No. The beatified angels cannot sin because the beatified angel can neither will nor act, except as aiming towards God since beatitude consists in seeing God through His essence (and God's essence is the very essence of goodness).
Consequently the angel beholding God is disposed towards God in the same way as anyone else not seeing God is to the common form of goodness.
Now it is impossible for any man either to will or to do anything except aiming at what is good; or for him to wish to turn away from good precisely as such.
Therefore the beatified angel can neither will nor act, except as aiming towards God.