It can be a dying SKREEM, but generally, SKREEMs do not die slowly.
I'd read what you are seeing as an electrical gremlin in the SKREEM where the SKREEM is becoming confused, you "reboot" it by yanking the battery cable.

THis is generally caused by:
1) Power being removed and applied to the SKREEM quickly - they don't like that. Look for loose contacts between fuse and fuse socket.
Fuses 35 and 37 in the underhood box feed the SKREEM.

2) Noisy/unstable power to the SKREEM - look for lose or corroded battery cables, a bad battery ground cable, bad jumper from chassis to block, etc. Doing James 1549's grounding mod is a GOOD idea.
His fix is here:
https://www.crossfireforum.org/forum...le-engine.html

3) Dying, aging battery. Batteries over 4 years old do not belong in the Crossfire. (The original VARTA batteries seemed to last forever, but those are the only ones that seem to be capable of that...)