Voltage spike at the coil when opening the switch
Notice that the Current in L is 1A and as the switch opens the current is now shared with the capacitor so as they both swing own past 0A the voltage reached a maximum in the opposite polarity at a resonant frequency of \$f=\dfrac{1}{2\pi \sqrt{LC}}\$ = 223 Hz or a 4.5 ms cycle period. 
 

Notice the stored Energy in the inductor is also being dissipated in R1 @ 10W and the 1st peak VAR of the inductor = 50.573W and capacitor = 41.021W = 91 VAR

The ratio of total reactive power to resistor power ratio VAR/P=Q = 9.1 which is close to the voltage gain for Q>>1
thus Vi=10V is amplified x9 to almost -91V as the voltage must change polarity in the inductor for the current to change directions from +1A to some negative peak less than -1A due to losses dissipated in both R's.  (-0.75A for 1st peak)