Complex sentence: While AMT can be unprovisioned by the owner, there is no official, documented way to disable the Management Engine (ME); it is always on unless it is not enabled at all by the OEM.
Split into simpler sentences: While AMT can be unprovisioned by the owner, there is no official, documented way to disable the Management Engine (ME). Thus, the ME is always on unless it is not enabled at all by the OEM.