You don't need to activate USB debugging. ADB pull commands will work fine in recovery.
I don't use toolkits, so I'm not sure that one works. But I'm pretty sure it has the tools inside to run adb pull via command prompt.
Basically u plug it in, boot to recovery.
run cmd.exe from windows, navigate to the folder where u installed the toolkit, where there is an adb.exe.
type in "adb devices", it should show you one device represented by a string of code which is connected in recovery mode. (disconnect all other android devices)
then just type in "adb pull /sdcard/TitaniumBackup" whereby all the TiBu files will be copied into the same directory where your adb.exe is.
Anyway, there are ways to flash back to a working condition without wiping your phone, so not sure why u are trying to retrieve TiBu files. You can reflash CM10.1 again, making sure you wipe to factory default (this does not clear what is in /sdcard). Or you can flash stock N4 image with the fastboot update command (same as above).