Two members of the Metropolitan District Commission yesterday attacked plans for the controversial Metropolitan Boston Arts Center. Commissioner Milton Cook called the newly established theatre advisory group "a way to get rid of people from local organizations," and his colleague David J. Mintz questioned the legality of the lease signed by the MDC and MeBAC.

The committee composed of local representatives has no voice in policy matters and is therefore powerless, Cook explained. He doubted that the three members added to the project's governing body represented a sufficient broadening of scope.

"I am in favor of spending money on drama and the arts," Cook continued, "but the new center should have a broader use--not just ten weeks of summer performances."

Mintz noted that the bill leading to the planning of an art center provided for $5 million to be spent on "recreation," and he raised the question, "Is an art center recreation?" He also pointed out that the lease, which would pre-empt the long-established Met Harness Track, does not delineate the exact site of the proposed theatre, leaving a possible means to open further discussion of MeBAC.

In last week's heated MDC session that approved the founding of the new center, amendments proposed by the two men to submit the plan to the Attorney General for examination, to give local groups voting power, and to insure the non-profit character of the enterprise met with defeat.