Lol at the last post's "ramming your penis balls deep into your girlfriend"
Very strong lifting. I'm going to echo a lot of comments - squats were a little high, but look like they could easily get to depth, it looks like a mental thing, not a mobility issues. I think all your openers were too heavy, as others said - not a big deal for a mock meet, but I agree you should take 15-20 lbs off of all of them for the real meet.
As for deadlift, you are using a TON of back and not much legs, which is why you are having so much trouble locking out that 520 (also, I believe you're right, that second 520 might have passed in competition... but it definitely wasn't fully locked out compared to the 495). But anyways, I think a slight change to your setup might help your deadlift a lot. If I were you, I would start maybe another inch away from the bar. Then, instead of setting up the way you do now, where you are in the bottom for quite a few second before initiating the pull, I would setup in a way so that you are keeping maximum tension on your hamstrings as you grip the bar - hips high, pump the legs if that helps you, but DON"T stay in the bottom. Then, when it is time to pull, bring your shins to the bar and the second they touch, fire upwards with everything you've got. Maybe you won't like the way that feels, and it's shitty advice haha, but I think tweaking your setup in that way would a) get your hips a little lower at the start of the pull, b) help you to use a better mixture of back and legs, instead of so much back, and c) maybe even increase speed off the floor, which would definitely make getting to lockout easier.
Check out the way eric lillibridge and pete rubish pull. They do a really good job of pushing their shins to the bar, and pumping the legs so they are getting a nice stretch reflex out of the bottom when they finally touch their shins to the bar and explode.