Yes, Magic has described the problem. Its going to ring to over twice Vpwr_in as you've chosen a non-polar, so presumably ceramic, Vin decoupling capacitor (C37: 4.7uF 50V). If its value was stable with respect to voltage, it would ring to a bit under 72V (or whatever the LM61460 breaks down at), but as a high-K capacitor will typically loose two thirds of its value by the time it reaches its rated voltage, if you test with a HV current sink load in place of the LM61460, I'd expect either it will peak at over 150V or (far more likely) the capacitor will fail.
Note that even if you delete L3, you may get some ringing due to loop inductance, so adding an electrolytic in parallel to C37 to provide damping due to its ESR may be advisable.