I get why Mormons feel the Bible has been corrupted.. makes sense, actually (although I personally have a different take).
However, I have a problem with the Jesus portion. If Jesus is who the Bible says He is and He did, for us, what the Bible says He did.. then why was the BoM needed to 'solve' the apostasy through a new set of ordinances, etc. Seems like that definitely suggests what Jesus did was less than entirely sufficient.
I think you've got some sort of fundamental misunderstanding. The LDS ordinances are not a replacement, not a new set of ordinances, but rather a restoration of lost ones. E.g. Jesus's apostles had the authority and commission to baptize, but that authority was lost and needed to be restored. There's nothing in LDS teachings that says what Jesus did was not sufficient.