Using LTSpice to simulate the switching of an inductor as per attached .asc file (please delete the .txt part).
I understand that the emitter current (Q2), at the moment it is turned on, should be positive starting from 0 mA.
LTSpice insists in showing a negative current which contradicts the sense of the one through L2, which is positive, starting from 0.
BTW, current through D2 is consistent with that of L2.
At lost here...