Not at all. Paul declares there is no other gospel than that delivered by Jesus Christ, and if any man preach another, not that there is another, let him be cursed. No, everything Paul teaches is in agreement with Jesus Christ, and any time it may seem to conflict, it is not being understood. I will add this is the attitude all must have when reading Paul's writings and it seems to confuse them, wait on the Lord, and all will come. Meanwhile take a lesson from Mary, when she did not understand something, she would keep it in her heart. I believe she did this because she knew understanding would come.
Really asking (as opposed to judging), are you saying Paul didn't speak for God? What Paul said that is still in the Bible IS what Jesus said too, since it's all inspired by God. (I suspect we're agreeing, but I'm still checking just to make sure.)