It cannot be done as silently as you were probably hoping for, mainly because of the debugger requirement:
You may disable WFP by setting the value SFCDisable (REG_DWORD) in
HKEY_LOCAL_MACHINE\ SOFTWARE\ Microsoft\ Windows NT\ CurrentVersion\
Winlogon. By default, SFCDisable is set to 0, which means WFP is
active. Setting SFCDisable to 1 will disable WFP. Setting SFCDisable
to 2 will disable WFP for the next system restart only (without a
prompt to re-enable).
Important: You must have a kernel debugger attached to the system via
null modem cable (for example:I386kd.exe or Windbg.exe) to use
SFCDisable = 1 or SFCDisable = 2.
After WFP is disabled using the SFCDisable = 1 setting, the following
message will appear after logon:
Warning! Windows File Protection is not active on this system. Would
you like to enable Windows File Protection now? This will enable
Windows File Protection until the next system restart. .
Clicking Yes will reactivate WFP until the next system restart. This
message will appear at every successful logon until SFCDisable is set
Have you considered using devcon or, better yet, pnputil to load your driver from the command line?