The trust cannot possibly be classified as a "simple trust" unless the trust instrument requires that all income be distributed currently. See I.R.C. §651(a)(1)
A trust qualifies as a simple trust if:
The trust instrument requires that all income must be distributed currently;
The trust instrument does not provide that any amounts are to be paid, permanently set aside, or used for charitable purposes; and
The trust does not distribute amounts allocated to the corpus of the trust.
If the trust instrument gives the trustee the authority to decide whether to distribute some, all, or none of the trust's income, then the trust is a complex trust.
