@Shamz
Not necessarily, had friends and family who have severed parts of their body, one crushed, one clean cut.
clean cuts don't hurt, crushed hurts like hell.
But also having been in a situation where shit was bad and I needed to move but was hurt, you do what you have to, you dont got time to scream and no ones helping you but keep in mind the kind of world this is, as long as you are alive you can be healed and pain is largely a 'stop doing this its hurt and it will get worse' response.
as long as you aren't in shock and your parts aren't completely effed you should be able to move, not to mention the consequences for not moving
you also have to keep in mind the kind of person diablo is/was, he knew the value of sticking to the script and not reacting.