First of all I am a Basic. Even with the presentation as I read it I would have advised on rapid transport and I'll say why then you medics can agree or pick apart my statements. ( i'm far from a know it all but I want to give my read on it anyway). You said baseline vitals were wnl, pupils perrl, did you check for ability to track there's wonderful term call HGN or the eyes ability to track on a horizontal plane. It's indicative of ETOH or to a certain degree anything impairing motor function. You also stated an 80% loss of function. Even with positive results of cva exam it's obvious something is either full blown happening or coming quickly. I can sum up my reasoning in 2 simple words. Gut instinct. The signs and symptoms may not exactly fit the case but it's obvious something is bad wrong here. NO AMOUNT OF EDUCATION CAN GIVE YOU GUT REACTIONS. That only comes from experience. Gut instinct is the thing that tells you that normal level of consciousness and VS mean nothings wrong but that gut check tells you it's an ALS transport....... ALWAYS ALWAYS ALWAYS err on the side of the pt.