IMO, that is indeed a stab in the back. I’ve never been enthusiastic about either Brooks or Mike Rogers from my district in AL. Both seem to be the wishy-washy type of Repubs who are afraid to actually, fundamentally be Conservative.
Mo Brooks response:
https://www.cnbc.com/2022/03/23/mo-brooks-says-trump-asked-him-to-rescind-election-remove-biden.html