I think the question of what happens when a displaced element violates the TZ restrictions would benefit from a clarification or a playing convention. Currently I would be inclined to go for:
If a move results directly or indirectly in a TZ restriction being violated then that move is not legal.
That still leaves the question of whether an element displaced to make room is "a move" within the meaning of the TZ restriction section.
The most sensible interpretation would be that any element that changes its position or facing is making "a move" for the purposes of these restrictions.
The most pedantic would be to class only those movements specifically listed as a kind of move (tactical, march, sponno and outcome) as a move, and also the EMTLU, which is not listed as a kind of move, but IIRC is explicitly mentioned as having to obey the restrictions.
I personally doubt that small creeps forward caused by partial forward interpenetration will be significantly cheesy, but it is certainly one to watch in case experience proves otherwise.
