It seems to me that "deal with" has a technical meaning here. That meaning seems to be essentially "alienate", but I think it would be highly advisable to consult a lawyer . The following document, on an Australian case, GPT RE LTD v Lend Lease Real Estate Investments LTD [2005] NSWSC 964, New South Wales Supreme Court, White J, 27 September 2005, addresses this very point:
"(i) The meaning of "deal with"
White J first dealt with the issue of whether GPT had "dealt with" part of its "Interest" under the Joint Ownership Agreement by entering into the Deed. White J found that it was only transactions which amounted to an alienation of the whole or part of an owner's interest which would fall within the definition of "deal with". [...]"
The rest of the discussion is well worth reading.
http://cclsr.law.unimelb.edu.au/bulletins/LAWLEX Corporate L...