Are you using decently reputable weights, or running heretic yourself? This project has many academic citations, it's used by many researchers to create "helpful-only" models and analyze their behaviors.
I can use techniques from the simple logit-lens at different layers, to J-Space analysis, to more advanced techniques for identifying deliberate misalignment. I can create and inject steering vectors, whether it's to align a model's CoT (which can be deceptively trained to misinform) closer towards what its underlying activations suggest, or just to probe or steer it.
I can also statistically analyse and understand _if_ steering vectors have been applied; and if so, from the vectors themselves it's very possible to translate those vectors back to the intent.
Think of it as analysing the complete, heavily obfuscated source code of something that is self-contained. It's not 100% the same, but weights are incredibly illuminating.