I think it can be reversed. Nobody plays hardball like Trump.
Any attempt to reverse this resolution faces the insurmountable threat of veto by any one of the other four permanent members of the UN Security Council (China, France, Russia or UK). Just as the USA's veto had singlehandedly prevented anti-Israel measures until last week, any one of the Israel-hating four can ensure that it remains permanent. This evil resolution may be defied but it will not be reversed. War looms.