If a boat is stuck on land, it will explode after some seconds. Before exploding, if you cast a teleport directly on that land boat, a weird glitch will occur, and you will watch your shaman moving between the teleport point and the boat. You are not able to move or cast spells in this situation, and the boat that is on land will not explode as long as this glitch is happening.

 

Watch the video to see how it is done. This works online or offline.