Support Screen Resolution lower than normal!

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http://androidforums.com – My glass randomly cracked in my pocket the other day. More like a pin point shatter (like a small bullet hole). With that though the screen resolution went down. I can now see the pixels very well (almost looks like it's running at 800 x 480). My question is what caused this and is there any way to fix it (settings or other wise) or is the screen itself busted? Everything else works fine. I replaced the glass on the screen and did a factory reset (thinking it might be a software issue) and it's still at low resolution. Has this happened to anyone else? Tried doing a search and (General)