I think the bit about the company and company stockholders having the right to enforce the trust means that they have the right to enforce the purpose trust against the trustees. I don't know if this power includes the dissolution of the trust.

Basically, in trust law, someone needs the power to enforce a trust. Normally, in the case of an ordinary trust, like where a grandmother leaves her grandchildren money, that's going to be the beneficiaries. But, purpose trusts don't have beneficiaries.

So, my guess is that it gives the company the ability to prevent the trustees from deviating from the goals of the trust - the question is whether it also gives them the power to dissolve the trust. I'm somewhat curious as to why it wasn't structured as a charitable trust.