Ramifications of assignment if account value w margin leverage exceeded on assigned underlying.

Let's say I take my chances at 355pm and my 25 QQQ shorts call contracts are otm, so I don't buy them back. Then I wake up the next day short 2500 shares of QQQ due to after hours move. Notional value $1.2 million. I have portfolio margin, so 6 to 1 margin leverage available. Ignoring the gain or loss on the qqq short, what about blowing up my account if I only had say 130,000 net value currenly. I would normally need almost 200k to be allowed to be short $1.2 million qqq, so I'm over that threshold. Do they just autoclose by buying shares (either enough to get me back into allowable range or all…either fine), or is this huge penalty perhaps and account closure risk?
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Is the answer the same for CME futures options, like Gold GC, (but leverage better there.