After a number of invalid passcode entry attempts the device is locked. The only way to unlock is with a complete restore and you will lose the data on the device.
This doesn't help now but in the future set up the free iCloud account and use photo stream so the cloud always has a copy of photos. You get 5 GB for free.
As for your believeing or not believeing - the whole purpose of a security code is security. Therefore, the feature is working as designed. If a stranger found that iPad you would want it erased so that they would not have your data.
You need to ALWAYS be backing up your data and plugging the iPad into iTunes at least once a month if not more in addition to setting up iCloud.
Sorry to hear your ipad is disabled. Normally with iOS there is a security feature that when a password attempt is failed too many times it permanentaly disables the device. You are forced to restore it. This might work but I cannot guarantee it. There is a program called Phoneview and it will recognize your device to get your photos off of it. I use it all the time and my phone has a passcode. The only thing is that it might not work because due to the ipad being disabled. I cant guarantee it working. The only real solutions if hoping that there is a iCloud backup or photostream turned on. Best of luck!
I Have the same problem. My son entered the wrong passcode too many times and my ipad mini is disabled. I backed everything up and have the right passcode. So I connected to ITunes and go to Restore the device,
Clicked OK, and then restore the device.
iTunes will start downloading an iPad software update and then comes the small window ---
iTunes could not connect to the iPad because it is locked with a passcode. You must enter your passcode on the iPad before it can be used with iTunes. -- How the **** I can enter the right Passcode when there's no field to enter it to? Would it be nice if you can enter the right passcode in ITunes to restore it?
Note: all the back up are in iCloud not in iTunes. I'm looking for option to remove the device from Find my iPhone on my iCloud account (as what others are suggesting) but could not find such option.
Let the download complete ( you will see the status of download on top right corner of iTunes by clicking on the box)
Then take your iPad in Recovery mode to restore it: http://support.apple.com/kb/ht1808