Busting airspace question

C J Campbell wrote:
This is a great example of why you don't blindly follow ATC instructions. I
think the proper response would have been, "Say again? We are still inside
the Bravo."

While flying from HOU to AXH, I've had the tower quite a few times turn
me loose and tell me to squawk 1200 a few miles before being clear of
the Class-B... I guess they figure that on a flight on a straight out
radial from the airport, it's not like I'm going to make any abrupt
course changes in the next minute or so...

On the other hand, I've had controllers keep me until I was well out of
the Class-B and I had to remind them to let me go...