Then you, of all people, *should* understand the difference between a 'hold' and a 'charge'.
The card has _not_ been 'effectively' charged, since *NO*MONEY*CHANGED*HANDS*. You are -not- incurring interest charges, nor are the 'free' days running.
You have made a _commitment_ to pay, those funds _are_ marked as *commited*, that's all.
If the limit is set low _at_your_request_, and you know you're going to have a big 'hold', *you* can ask the CC company to _raise_ the limit on the card, even _temporarily_, by the amount of the 'hold'. Voila! No more problem. All _you_ have to do is 'plan ahead'.
If _you_ are managing your account limit, then you *are* responsible for managing your account limit. You _know_ how the industry works. *USE* your knowledge.