You need Bootstrapper because the bootloader is locked. It's a highjacked recovery, not an application like titanium. A nandroid (clockworkmod) recovery is different from what you're thinking of. The nandroid backup backs up your /system, your /apps, everything. Titanium can only backup apps. If you brick your phone it can be resolved with a nandroid backup. Even if Titanium COULD restore your phone if bricked, you wouldn't be able to boot into the operating system to run it. That said, unbricking is actually usually done with an sbf flash (as booting into the clockworkmod recovery is problematic at times) and is sometimes the only way to go about restoring the phone. There's a link in my signature for sbf flashing instructions if you're interested. I'd read it if I were you because (no offense) I see a brick in your future.