[thrown_22]

It could be have been solved even more simply by making it a legal obligation.

Drama like this is God's way of teaching hippies why we have contract law.

[mmu_man]

I don't see why this wouldn't already be legally binding. He was elected, but he accepted the mandate which is described by this document.

[MRtecno98]

AFAIK he did not sign anything so no actual contract was formed

[sangnoir]

Just because a physical contract wasn't signed does nor mean there isn't a legally binding agreement, see promisory estoppel.