Your entire forum folder isn't being given "that sort of access", it's simply one text file all restictions that all your other files have are and have never been unchanged, if i get time (really bogged down with working 2 jobs at the moment) i'll add a custom box so that you can set where the file is written but if you CHMOD that to read only then how can it write to it?
The contents of the output.txt do not give any information about your site that you cannot get from browsing your site or its users, the fact that it's just bot information makesit even less desirable info
Glad you like the mod