Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
the arbitrator will have the authority to grant motions dispositive of all or part of any claim or dispute . 

```
. OPTIONS: ["Content removal", "Arbitration", "Choice of law", "Unilateral termination", "None", "Contract by using", "Unilateral change", "Jurisdiction", "Limitation of liability"].