What do you mean that "You have to be at a lower stance before the clinch"?
Muay Thai is a major part of the Thai's economy. There are good reasons why they rarely do Muay Boran stance anymore; they'll get knocked out. It's more of a gimmick to teach MB nowadays.
No offense, but you don't train nor fight Muay Thai and especially not at a level where your family needs the money from it to not starve. Neither do I, but if what you say works, the Thais would use it. I've trained it a lot more than you do, and follow a lot of what the Thais & Dutch do for 2 decades now; including clinch fighting every week for that long. Nobody stays low like that to avoid the clinch. I love fighting shorter dudes, b/c they're much easier to clinch & just about everything else.
Here, are you talking about being in neutral position while in the clinch (and wanting to be there to clinch fight) OR being caught in the full plum & your posture is broken?