Who/what created the universe (it either occured spontaneously or was created by something outside of the universe - we do not know which, but only one origin is correct).
There are obviously concrete laws of physics that govern things (what is the origin of those?), might there also be concrete laws of morality that govern humans (it appears there may be, or may not be - but only one is correct)?
These aren't necessarily the only two alternatives. Furthermore, knowledge of the genesis of the universe is not a prerequisite to determining the global applicability within the universe of dicta such as "there is only one truth" or "the law of non-contradiction has no exceptions."
There are obviously concrete laws of physics that govern things
But those "concrete laws of physics" themselves present an evident exception to non-contradiction (or the rule that simultaneous, contradictory states cannot coexist), in that accurate knowledge of complementarity subatomic pairs is impossible. For example, you can measure the location of an electron, but not its momentum (energy) at the same time.
might there also be concrete laws of morality that govern humans (it appears there may be, or may not be - but only one is correct)?
Why would concrete laws of morality governing "X" human behavior necessarily be incompatible with indefinite laws of morality governing "Y" human behavior? In other words, why must there be only one or the other (concrete laws of morality for all situations /or/ no concrete laws of morality for any situation)?
Indeed, our western system of justice is premised on the notion of "case by case" analysis, explicitly recognizing both the concept of generalized "rules" applicable to all situations, and the concept that extenuating and/or mitigating circumstances accompany each situation.
The everyday intangibles of civilized human interaction have uncertainty frequently and inescapably built in (uncertainties that, for example, imbue physical objects with necessarily contradictory incorporeal states, both of which are equally "true" until the uncertainty is resolved by measurable means).