Yeah; the thing to remember with formal development processes is it's to try and force something upwards, not downwards. If the team is being forced to adopt Scrum, and the rest of the business isn't willing to adopt the contract placed on them (for Scrum the biggest is the business can't interrupt the sprint or -nothing- is a reasonable expectation from the sprint any longer, and any estimate is null and void and they don't get to ask why the team missed it without a finger pointing back at them), it's not Scrum that is the problem.