I had a situation with my S4 2 days ago where I was changing pools and after I clicked save & apply it crashed.I could not access the web interface nor was it mining to any of the pools. It took me about 2 hours to get to where it is stored and it was running quite hot and roaring like it was trying to take off on a runway. I did a hard reboot and monitored it for an hour. Everything seemed to be running better than before since it was now hashing around 2.1TH instead of 1.9TH so I went back home. After about 3 hours running I noticed the temp rise on 1 board from 49C to 61C. I was not able to get to the miner to reboot it again so it ran all night like that with me stressing.

As soon as I could get to it I hard rebooted again and monitored it for about 4 hours this time. Every thing seems to be running normal again with the boards at 51C and hashing at 2TH now.

I would love to know what could cause this so I can try not to do it again...  

How can I remotely stop the antminer? I know I would only be able to stop it if I can connect to it, but when it is running hot and it seems like something is wrong I would like to be able to stop it so it does not damage itself.