I am speechless as to why you didn't watch the entire replay.
End of quote
Because you didn't specify when and where to look, so I watched until I saw something matching what little description you gave. I don't have infinite time, after all.
In the battle in the Plasma Cloud, your LRFs were using the Charged Missiles ability that you researched. As noted in the descriptions of both the research and the ability itself, it makes the ships unable to move in exchange for the boost in power... Your opponent didn't do anything to you at all.
So yes, please do pay closer heed to what's going on before jumping to conclusions.