Judges do not issue even temporary restraining orders willy nilly. In fact, many women have died after being denied a TRO.
To get even a TRO, a plaintiff has to make several showings, including a likelihood of winning the case when the case is fully heard, and also ikelihood of irreprable harm if the court does not issue a TRO. It's hard to make those showings without also showing that the defendant (a) has been dangerously close in the past; and (b) is likely to harm the plaintiff in the future.
For all the standards that plaintiff must meet before an Idaho court can grant a TRO, see caselaw.lp.findlaw.com/data2/idahostatecases/miller.pdf See also
http://www2.state.id.us/crimevictim/research/legislation/39-6301.cfm#6308(The article linked in the OP did not indicate that Hall was not present when the TRO issued, so I assume he he had an opportunity to defend himself against issuance of the TRO, meaning that it was not issued solely on allegations by the plaintiff.)
I found this interesting:
"Also this year, Hall resigned his post as general counsel to the Republican National Committee, the top legal position at the governing body for the national GOP. Hall remains a member of the RNC as Idaho's national committeeman, a post he's held since 1990."
After almost 20 years, he resigned this year, yet he is still only 56. Pure coincidence? Maybe. Maybe not.