Yes, it's possible.
You have to do all the steps of rooting till you'll reach "recovery" mode (just before wipe and flash).
than just run the debugger
withing the shell
list your apps with:
now you can delete app:
and so on
It's good idea to backup your apps on sdcard
cp /system/app/* /sdcard/backup
after work is finished
reboot and you're done
It's good idea to wipe data after removing apps to avoid some junk in app manager.
MJ | Nexus 4; HTC One S; Nexus S; Lumia 820; iPhone 5