Lanefan
Victoria Rules
In the case of Gandalf, divine blessing?It seems to me that sometimes, by control, you mean something like being free to declare actions for my PC (eg "in control of what my PC does, how they act". And I agree that getting temp hp doesn't affect that.
But I don't see how it doesn't affect what your PC thinks and feels. If nothing about your PC's mental state has changed, where do the temp hp come from?