So I went to see my physio today about my exploding hip...
I knew this already, but he confirmed that it's definitely my adductor causing the trouble. On my right side my adductor was causing my hip flexors to be massively over active (and massively hypertrophied - useful). I'd tried to stretch and do soft tissue work on myself, but you just can't get in there. He hypothesised that at some point in my youth some femur rotation had caused me to use my adductors as hamstrings. So, when I was dipping my toes into the world of sprinting, I wasn't actually using my hamstrings properly? Is this real life?
Unfortunately for me, the entire area is extremely well innervated and so the actual manual therapy was excruciating. I don't normally cry out but this broke me! After he'd finished I had acquired a massively joocy adductor pump. Useful.
I'm not going to do any heavy deadlifting until my hip flexors calm down, so the timing of my deload works well.
In other long standing mobility issue news, I've made more progress with my ankles. There is now no longer a bony impingement in the front of my right ankle, so I'm free to actually stretch it conventionally without feeling like it's going to crumble.