MR. ROOTER <ROOT.O> RESCINDS UNITED WESTERN PACT Mr. Rooter Corp said it rescinded a recent agreement calling for <United Western Energy Corp> to to buy a majority of Mr. Rooter's stock for four dlrs a share. The company said it has also demanded repayment of a 150,000 dlr loan made to United Western. Since announcing the agreements, Mr. Rooter said, it discovered additional information relating to United Western and the unaffiliated privately held corporation which had guaranteed all of United Western's obligations under the agreements. Mr. Rooter said the agreements were rescinded d"in light of this additional information," without providing details. It said talks are in progress with United Western with regard to the repayment terms of the loan.