Spinning,
There are no clear legalities here, other than (and I speak as RYR crew) you will not be detained on one of our aircraft.
If you decide to offload yourself due to delay/heat/change of plans you will be allowed to go without argument. As much as you may not to travel anymore we would not want to try to "force" you to stay, as you may well become disruptive (as I would in your shoes) and it is a situation nobody wants.
Obviously once off you cannot come back.