If I had my college tuition reimbursed by my employer, do I need to report my 1098T? It is an accountable reimbursement as well.

No, you will report a 1098-T if your employer reimburses tuition according to this Turbo Tax source.

It's unclear what's going on and there are a lot of moving parts to consider.

Your employer can usually reimburse you up to $5250 tax-free.  Even if the college issues a 1098-T showing they received the funds, you can't use those funds for any tuition benefit.  However, reimbursements over $5250 are usually considered taxable income to you and must be included on your W-2 wages.  In that case, you can apply those funds toward tuition credits, because the funds were included in your taxable income--it would be the same as your employer giving you a taxable raise that you used to pay the tuition.

(In a few cases, tuition assistance over $5250 can be a tax-free fringe benefit, and again in that case, you can't claim any credit if it was paid with tax-free assistance.)

If you need more clarification, we would need more details.

The 1098-T is only an informational document. The numbers on it are not required to be entered onto your tax return. 

You only enter it if you are claiming  a tuition credit or deduction.