[DrJokepu]

If a sandboxed application can get the sandboxing environment into a state where the only way to get the sandboxing environment working again is by restoring it from a backup, that is a serious defect in that environment.

Also, since this issue is very trivial to trigger, it's not very difficult to hide the triggering mechanism in a malicious application in a way that even a reasonably thorough source code inspection would not necessarily spot it. See also: The Underhanded C Contest.