Early WH washers did have an OOB switch; later ones, no. When we used to take throw rugs to the Frigidaire coin-op, the lady in charge watched us try to rearrange an OOB load of white rugs washed in really hot water. She came over and showed us that if it stopped, we should just push the reset button and keep doing it each time the switch tripped because as soon as it spun the water out the weight was not that uneven. If the Mieles find they cannot balance a load, they stop then retumble, but only in one direction, the clockwise spin direction for a couple of times and retry. If the OOB is not too severe, the W1986 will just push the speed to the limit, slowly increasing as the water is spun off and then you hear the hydro balance wheezing as it takes over as the motor gets up to speed. It gives 1000 rpm spins between each water change. If the Creda is too OOB in the distribution period between water changes, it will skip the spin unless I turn it off and back on.
When Frigidaire first introduced the Roller Matics, they claimed that they would not stop with an OOB load, just spin slower. Consumer Reports commented on that in the test when they said that the machine made a strong, acrid, burning odor while doing the slower wobble spin.
Since this has arrived at smells, in the very early 70s, at a friend's house, we once washed the guest room bedding after the fun couple from Florida did not tightly cap the poppers after finishing with them. It probably would have been better with a vented dryer than the GE combo he had. It's a wonder they lived through the night and that all of us are alive and not too OOB today.
It's strange that while Kenmores had OOB switches and that awful buzzer, WP and KA machines did not have them.
Kelly, are you going to take the Super Thin Twin to your new house?