Odemwingie has made only four outings from the bench for the Baggies since his move to QPR fell through as the transfer window closed in January.
He tweeted: "Keeping me on the bench now is worst than what they did on the 31st. New advisers told me to take say its all my fault cos its better or me.
"If they like they shouldn't even give me 10 mins to play. Threatening to ruin my career? Career I closed already last summer? No harm to me.
"Want to treat me like an average player. The abuse and praise I get is it average ? So get some extra from me too.
"Former Albion sporting director in the presence of the new and Manager apologised to me in private. Publicly not good ? Come under my cloud.
"Drive was lunacy ? Missing in the training section that day also lunacy ? They forgot to complain about that though cos they knew were I was.
"Things have almost got back to normal till Peter spoilt it again. What's normal ? We see things differently obviously."
The Nigerian also accused players of talking behind his back:
1senior player in presence of the captain and few other seniors last season. 40 a week. If he s on that I should be on 80.# talksbehindback— Peter Odemwingie (@OdemwingieP) March 17, 2013