Starkiller Glitch when VS Him On GA Defense

I was fighting Starkiller in GA and he brought down the capital ship TWICE. His kit says he can only do it once so how did he do it twice. This is really annoying because it happened in my 2nd and 3rd round of GA, and I would have one my battle with 1 attempt but starkiller used his size means nothing move the 1st time which is expected, then he gained 100% tm right after and used it again. Because of this it cost me to 2 shot my opponents Starkiller and lose crystals because that lost cost me my GA round. If he wouldn't have brought the capital ship down twice in a row I would have been able to one shot it and win my GA round. 

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