who can release back to work? and more ??

[hubbyinjured]

hi new here

lots of questions....im in wa state....my hubby has a job injury....

has been under treatment with ortho/had surgery
been receiving time loss/loss of earning power after he was able to go back to work on light duty
job of injury terminated i week after injury claim
2nd income of self employed

first question

went to an IME-said able to do job of injury-hand wrote to refer back to treating MD for work release

IME report-2nd job-self employed-able to do job duties-did not say he was releasing hubby back to work

claim rep-closed claim-on IME report

at the time of the IME still under care of surgen who preformed surgery on hubbys shoulder-was on light duty with self employment-job of injury terminated a week after injury claim-
receiving loss of income benifits.
Treating MD had asked for an MRI to investigate aggervating pain, stiffness, etc of shoulder/neck, was receiving pt/massage

claim rep sent nothing to treating MD-
sent no IME report-
treating MD had no say in the close of the claim.
treating MD was not ask to release back to work

can the claim rep close claim?

thank you