If for some reason you become locked out of SSH due to a misconfiguration, you may be able to recover without having to resort to a local console. WHM provides access to a script that will reset the SSH config to its default settings:
http://x.x.x.x:2086/scripts2/doautofixer?autofix=safesshrestart
Of course you would replace x.x.x.x with the appropriate IP/hostname.
NOTE: This will remove any custom configuations you may have in your SSH config, so be sure to use this script only in a pinch.