I would be worried about it tipping over ,say your letting it down and you didn’t notice a safety lock was hung up and all the weight shifts ?? At least if she’s bolted down you got a chance .
Biff, I know what you are talking about. Once while installing it, something similar happened: one of the cables came off its pulley, which made one corner lift higher than the others, and the danged thing began to tip over! That is some scary stuff all right. I bolted it down.