Help request to downgrade RHEL7 workstation from an acciendatly updated beta version

Dear community members,

I am quiet new to linux OS. A recent update of my RHEL 7 workstation has end-up updating the OS to RHEL 7.2 beta version due to the presence of beta repos in the repolist, which I was not aware of.

cat /etc/redhat-release
Red Hat Enterprise Linux Workstation release 7.2 Beta (Maipo)

During the process of this accidental update, many packages are found to be broken or not updated successfully and I am failed to access the newly installed kernel.

Update notice RHBA-2014:0796 (from rhel-7-workstation-supplementary-source-rpms) is broken, or a bad duplicate, skipping.
Update notice RHSA-2014:0705 (from rhel-7-workstation-supplementary-source-rpms) is broken, or a bad duplicate, skipping.
Update notice RHSA-2014:0908 (from rhel-7-workstation-thirdparty-oracle-java-source-rpms) is broken, or a bad duplicate, skipping.
You should report this problem to the owner of the rhel-7-workstation-thirdparty-oracle-java-source-rpms repository.

rpm -qa kernel
kernel-3.10.0-229.11.1.el7.x86_64
kernel-3.10.0-306.0.1.el7.x86_64
kernel-3.10.0-229.7.2.el7.x86_64

Here, I kindly request you to suggest me the possible steps I should take up to come out of the present situation.

Many thanks in advance
Aneesh