MASS-Diver:
I disagree, while the problem may be easily fixed, it's a HUGE issue. Don't kid yourself - having the right rig is very, very important with regard to DIR diving. No matter how skilled you are if you are diving with an unsafe setup like this one you are NOT DIR. Donating from your mouth is one of the most basic tenents of DIR - if you don't do so, you are not even close to doing it right. This a major point of DIR - I would suggest that you have missed this most critical teaching that makes DIR different from other systems. Having a bungeed backup is not a small detail.
Well ... the hog rig is a part of the DIR system ... and separating any single part from the system makes what you're doing, by definition "not DIR". I like to wear my light on my right hand. By definition, that makes me as much "not DIR" as the person who's wearing a standard regulator configuration.
But that's not what I hear you saying ...
Donating from the mouth is NOT what makes DIR different from other systems. Every single tech agency out there teaches you to do that ... and most have been doing it since long before DIR was conceived. I was taught the method as an alternative configuration by my YMCA OW instructor ... well before I ever heard of DIR. I teach it to my students as an alternative method, and I don't teach DIR.
So please ... don't make it out to be something that's unique to DIR. It's not.
It is also not inherently "unsafe" to be using a standard configuration, wherein one donates the octopus. At least not under basic, recreational conditions.
What would make it unsafe is if you don't practice OOA drills regularly, don't service your equipment on a regular basis, and don't check the functionality of your octopus prior to every dive.
The same can be said for the rig you and I both dive.
Now ... if you want to talk about going into restricted spaces with a rig like that, I'd agree with you that you're not adequately configured for the type of diving you're planning to do.
To my concern, the most important aspects of DIR aren't about gear. It's the planning, preparation, and attention to team, the use of standardized gases within certain depth ranges, the "on the fly" calculations (and the knowledge that's necessary to understand why it works), the emphasis on practicing your skills regularly, and the overall attitude of top-down safety that sets DIR apart.
It's certainly not the gear. Although that's an important aspect of the overall system, you can learn how to use a hog rig without knowing a single thing about DIR ...
... Bob (Grateful Diver)