ca18 electrical god needed!

[dlongmu]

ok im going to ignore my mild missfire issue in this post. My car cuts out randomly when warmed up.

This is what happens:
car cuts out mid drive, rev signal drops to 0
i slow car to a stop n turn off immob
turn key and current is drawing but starter isnt spinning
let it cool a bit, no change
remove neg terminal for a few secs n replace, starter spins n car turns over/runs for another while.

fuel pump is good, earth is good
immob seems fully functional
battery is 100%.
Id normally suspect crank angle sensor given its one of few sensors getting a roasting, but no cas code on ecu, and this wouldnt account for starter not turning.
Another thought is fuel pump relay, I havent checked that yet..

any thoughts?