How to reload classes in JBoss without redeploying?

Issue

• When changing an application 'a bit', the only way we found to reload its classes/lib is by redeploying it.
• We are already using an exploded WAR deploy method, but whenever the classes change, it keeps using the old ones, therefore we still need to redeploy it...
• Is there any way to reload the classes AND to avoid the redeploy (and it's time) ?