removing crosstalk spike from a signal question

[yefj]

Hello ,I have build the following circuit which is a full sequencer.
However the signal in Vg2 has a certain spike which caused by the M12 signal doing some kind of cross talk using some capacitor probably.
Is there a way to eliminate the spike shown below?
Ltspice files are attached.

--- Updated Saturday at 10:35 AM ---

Hello , its CB capacitance of Q1 which passes the spike from the nagtive -12V pulse.
When I put a resistor between base and collector the pulse Vg2 gets moved exactly to the spike place(so no more spike issue).
However Q1 is a mechanism where I delay P12 signal by delaying the Vbe of Q1.
now that I add a resistor between base and collector ther is no more delay?
Is there some solution to this problem?
Thanks.

 

[FvM]

I wonder if the spike causes actual problems. If so, you can add load capacitance to Q1_c net. Or supply Q1 from +12 instead of Out_p.