WS-AT not supported

In one scenario there are services using WS-AT that is available out of the box on Websphere Application Server. Since webMethods (v8) does not support WS-AT. is any good alternative to resolve the problem.

Jboss 6, 7 has support of it, not sure how well is done and how it can be incorporated into WM.
You may want to check with SAG support first.