How to disable event handlers?

[unige]

Hi,
I want to disable a system event handler (specifically Kernel::System::CustomerUser::Event::TicketUpdate, because if a customer user moves from CompanyA to CompanyB, his tickets must remain assigned to CompanyA, not follow him to CompanyB) .
But I don't find any specific switch for it and seems to me that disabling the module form the SysConfig has no effect.
Giving a first glance to the code, I don't see a check for IsValid before running the event handler.

Any clue?

[alexus]

Hi,

Try to disable this CustomerUser::EventModulePost###2300-UpdateTickets in SysConfig

[unige]

It works,
thank you.