You're doing that thing again.
Constitutions are composed of constitutional laws -- explicit but never complete -- and constitutional norms, implicit agreements in order to make government run smoothly. (The United Kingdom is a good study here, since a much larger percentage of its constitution is norms.)
Constitutional crises mostly don't involve violation of constitutional laws (although if Trump takes office we'll have that, via the Emoluments Clause). They mostly involve violations of constitutional norms, and are resolved by the creation of some new law and agreement of new norms.
A good example of a relatively minor constitutional crisis is FDR's third and fourth terms. Not against the law, but a violation of extremely longstanding constitutional norms (Grant wanted to run for a third term and was told it would make him look like a dictator). Obviously it went on for a while due to FDR's popularity, but once FDR was gone they passed an amendment to prevent any president from serving more than two terms again. Crisis solved.
In the last eight years we've been dealing with a serious violation of constitutional norms in the form of a GOP congress simply unwilling to do the basic job of governance. We've been compensating for that by moving more power to the executive branch -- note that bills passed during Obama's tenure tend to give the executive much more latitude to control the implementation of the laws than prior bills, because everybody knows Congress won't be doing the work of fixing details later. DACA is another example of Obama using executive power to carry out a generally popular policy that prior presidents would have looked to Congress to implement. But the executive branch isn't really supposed to be that powerful -- it is supposed to depend on the legislative branch to set high-level policy, then take responsibility for the details. Ths shift of power is not healthy.