It was just Instagram, apparently a lot of users were put "inactive" and it wasn't just windows phone users. Daniel Gary, the creator of the "Instance" app for Windows phone, even posted that OTHER people besides WP users were getting the same problem. And it was trending on Twitter for quite some time. You broke no rule... random accounts were being dealt the same situation. There is only one solution that's been found thus far...create a new account. Sorry to be the bearer of bad news.
Maybe you got caught up in the fruit jam? <a href="http://gigaom.com/2013/06/29/a-fruity-spam-attack-hits-instagram/" rel="nofollow">http://gigaom.com/2013/06/29/a-fruity-spam-attack-hits-insta...</a>