I'll note that WMF has provided a statement here: https://en.wikipedia.org/w/index.php?title=Wikipedia:Community_response_to_t...
I find WMF's justifications for its actions to be unpersuasive. WMF's policies can (within some legal limits) be changed by WMF, so using WMF policy is not a sufficient justification. I also am troubled that WMF states that it lacked confidence in Arbcom's ability to handle a case but, as far as I know, WMF did not present evidence of Arbcom's problems to the ENWP community so that the community could address them. If there is a problem with Arbcom then that is first and foremost for us as a community to address, and WMF almost likely should not have bypassed Arbcom in an individual case. An analogy would be the U.S. President bypassing U.S. Federal courts in an individual case because he/she does not trust the courts to handle the case in the manner that the President wants.
At the same time, I would not approve of criticizing someone for communicating a concern to WMF. Sometimes people don't know where to communicate their concerns, and someone might have had a legitimate concern about Arbcom's ability to handle a case in an impartial manner. I think that WMF should have handled this differently than it did, but that does not mean that any original concern about Fram and/or Arbcom were invalid.
I would not sanction someone who communicated a concern to WMF for doing that. However, if I had the authority to do so, I would consider applying a sanction against WMF for its handling of this matter.