Sounds like an easy thing to do.
1) Create a GLOBAL VARIABLE called SPIN_ON = 0
2) Create an even SYSTEM every Tick or SYSTEM every X seconds
Add a 2nd condition: SPIN_ON = 1
--------- ACTION = Spin player (graphics)
3) Create an invisible sprite which will be the real player. PIN on this the graphics of the player with Position only (because you said you don't want his angle to change).
4) When someone taps
--------- SYSTEM set SPIN_ON to 1.
--------- Move the invisible sprite to the tap coordinates.
--------- upon arrival SPIN_ON back to 0.
Good luck.