You're welcome, Ewan.
1)When the Baboon takes an interest in the area covered by crags tight red Speedos , would it feel and touch the area they cover first , possible even lick the bulge in them first ?
The baboon would not have experienced clothing before, so he would have been very curious. He probably would touch and feel and taste.
2) Given that A baboons hand is not similar to ours this with help it when taking Craig’s Speedos off, will it remove them completely?
A baboon has shorter fingers than we do, which makes climbing through trees more difficult for them than it is for many other primates. But their fingers are still quite dexterous. It would be capable of removing the Speedos completely.
3) In what way might the Baboon toy, with Craig’s private parts?
Touching them, perhaps shaking, nipping and licking before deciding to eat.
4) What will be happening to Craig’s private parts when the baboon starts to sniff and lick at them? Would it take them into its mouth to get a better taste before biting off parts of it to eat?
Yes, the baboon is not familiar with a human as prey. He would very likely put them in his mouth to make sure it was something he wanted to eat.
5) What sort of scavenging birds would feed on the remains, what they do with the red speedos?
Cape vultures and other vulture species would be there, as would some species of storks. They wouldn't be interested in the Speedos.
6) What if anything would be left on the ground once the scavengers had finished?
None of these animals would be capable of crushing thick bones. The skull, minus flesh would be there. The long bones of the legs and arms would be gone because the wild dogs would drag them off to chew on. The Speedo would still be there, unless it was drenched in blood. In that case, the dogs and hyenas would consume them.