based on my experience on running the stock cards BEFORE i watercooled, you CAN overheat the cards resulting in a shutdown condition by doing a restart from the mobileminer.
try it, and youll c what happens!!
this is if u set your AMD settings to max of 95 C, youll easily hit 98 C or more by doing a mobileminer restart. watch out!!
I'm sorry to hear you ran into issues and glad you found solutions. However, restarting mining in MobileMiner simply stops and then starts mining in MultiMiner. Nothing more or less.