I've never had an issue with my groin area when squatting deep / wide . My issue has been with my hams. So I can't really comment on what to do there. I can say that if your not using breifs , then put them on or get some because they help keep the hip area ( groin too ) tight and you shouldn't feel a thing .
As for going deep , it looks like your almost there , maybe a few more inches (on most of those lifts ) and you are there. I'm sure you don't want to drop the weight down , but that might be what you'll need to do to go down farther and then work your way back up.
The foam rolling will help too.
... It looked to me like you were in your suit also
