I think landing "wrapped" simply means one does a trick which would typically involve a handle pass, only they do not pass the handle and land with the rope "wrapped" around them instead......I think "blind" refers to the direction of the spin. For a HS FS 360, you would look over your lead shoulder so that your lead shoulder and head turn away from the back of the boat while your rear shoulder moves towards the back of the boat when the rotation begins. On a HS BS 360, you turn your head to look over your rear shoulder so your head and rear shoulder turn away from the back of the boat and your front shoulder moves towards the back of the boat as the rotation begins. One could land either one of those tricks "wrapped" if they did not pass the handle during the rotation.
This should help if you are still confused about "blind". http://www.wakeworld.com/Tricklist/TrickTip010.asp