The OP stated he tapped the brake to release the cruise control and allow the MH to begin slowing down from resistance. I keep asking myself what would any of you rather have him do, allow the cruise control to continue to cause the MH to roll down the road, or should he let go of the wheel long enough to disable the cruise control?
Personally, I congratulate the OP for his quick thinking regarding the cruise control and plan to use that strategy myself if I ever encounter a front blowout and would suggest it to all others here.