That Sounds Safe
In the event that you’ve ever been into a building where the toilet wasn’t working, if there is a stick and string system attached to the flush lever, the lever is almost certainly broken. As a result, it is reasonable to assume that the mechanic who discovered this lever system had a general understanding of what was going on at the time.
The mechanic was almost certainly impressed by the common courtesy displayed by the car owner in this situation. Not to mention the time and effort that this driver put into informing them that their vehicle had a sticky accelerator.