Hopeful,
I noticed a similar anomaly, although not as extreme as your pictures suggest.
I find it extremely hard to believe you actually have more girth at 70% than 100% though. You have more blood/volume at 100% erection, therefore the only way you can have more girth is if your penis expands before it elongates. Considering blood will always choose the path of least resistance this will occur if you have super loose fibers ( cant remember technical term

) controlling girth OR you have a something which restricts elongation. Therefore you penis will only elongate with a sufficient build up of pressure. (ugh, i dont think i articulated this very well

)
One argument against increased girth is that while your dick is wider it is not girthier(?). This is because there are two dimensions to girth- width and depth. So at 70% erection you have a wider shallower penis. At 100% erection you have a narrower deeper penis.
Anyway, just go measure and tell us the results
