Активировать WINEDEBUG на пару секунд.

Через winedbg пробовал? Пишут:

1.7.10. Debug channels

It is possible to turn on and off debug messages as you are debugging using the set command (only for debug channels specified in WINEDEBUG environment variable). See Chapter 2 for more details on debug channels.

Table 1-11. WineDbg debug channels management

set + warn win	turn on warn on 'win' channel
set + win	 turn on warn/fixme/err/trace on 'win' channel
set - win	 turn off warn/fixme/err/trace on 'win' channel
set - fixme	turn off the 'fixme' class

и причем тут я ?
да можно - признак дебага храниться в переменной - вот ее и надо включить и выключить