Gain access to data of disabled iPad
Do you happen to have a computer you trusted before with your Apple ID logged in? If this is the case, there's little possibility you might be able to get to your data. I have just blocked my iPhone and tried with iTunes, still could get to all data stored. 

I know the answer is probably not, yet may be you previously have done a back up of this device? You'd just restore the device from it with all contents.