Hi,
The footer on the contract form is not customisable I'm afraid.
I'm not sure what fields specifically you are trying to hide that appear on the form body, but you could try making those fields not business required by editing the field properties then move the locked fields in to a tab which is set to not visible.
The contract form has lots of core crm functionality included which you can not customise. If this doesn't meet your requirement to a satisfactory level, I'd advise you build your own custom entities to deal with service contracts.
Rob
MCTS. GAP Consulting Ltd. Microsoft Community Contributor Award 2011 & 2013