I think it is also important to realize that just because you played for 4 hours while spreading 1-10 at Casino A with no heat, does not mean you can expect to do that at Casino X and not get backed off. In fact, you could even get backed off at Casino A doing the same thing on a different day or a different shift.
I will also reiterate johndoe's statement above. The only time I've been backed off, there was no heat. No floor person standing behind the table, glowering at me with his arms crossed. No pit boss on the phone sneaking surreptitious glances at me. The pit boss walked into the pit, straight up to the table, and told the dealer to push my bet back.
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