The first report is not job abuse, as he did not switch in order to instantly arrest you - if he had instantly swapped back to another job after arresting you, then you may have been able to make a case for this.
He switched, you ran up to him and he waited a moment before arresting you, which would've given you plenty of chance to run away. He would've been breaking the rules if he hadn't arrested you in this situation, as he would therefore have been being a corrupt cop.
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