For what it's worth, I agree with you that it would be completely unconstitutional to strip a good-behaving judge of his office and salary under any circumstances, but that's not necessarily a predictor of what would actually happen.
But then, we've never since then seen such a drastic reduction in revenue as would result from the invalidation of federal income tax.
Such an invalidation will never happen through simple evasion. The taxes will simply be restructured to be collected by corporations through a Euro-style vat which is the normal progression of income tax resistance movements. In fact such resistance movements are encouraged to justify the move.
The process and public campaign to make the changeover palatable is already running:
Refer to Reply #252 above.