How to get a mgtools syssnap when system is in restricted state and console is locked?

How can I get a mgtools syssnap when system is in restricted state and
console is locked?

BRMS has this issue where they leave a commitment control hanging. I can
easily duplicate it by simply running
SETUSRBRM USER(QSECOFR) USAGE(*ADMIN)
WRKMEDBRM TYPE(*ERR) LOC(USSI7VTL) SYSNAME(*ALL)
A DSPJOB OPTION(*CMTCTL) shows they leave the commitment control hanging
I reported this to IBM years ago and the guy with BRMS says they are
incapable of writing code with such an error as this and I must have been
doing something else. They closed the case.
I've gotten into the habit of signing off/on again before doing critical
operations. Problem is that I should do my signoff/on immediately after
those BRMS operations. Instead I wait until after the ENDTCP and ENDSBS.
So now I'm in restricted state and try the sign off. Normally works. This
time the job was hung.
Opened up a new case.
IBM won't work on this until I get a syssnap while the system is in
restricted state and the console job is hung. I guess it will be years
longer until this gets resolved...