411A is correct.
If ATC want you off the runway, and you are not happy with the situation, You go at your own pace. Simple as that.
More than that, every Chief Pilot, and Fleet Captain I have ever worked for would back that position up.
13 years based at BHX, and the far end of 15 is nasty when wet. ATC know it, and usually give you room to slowly make the exit. If the guy behind me has to go-around, well bad luck. Better that than going off the end. Then the Fleet Captain is going to give me a hard time.
L337.