In this case i would try to mindgame him using multi-fairs (while keeping a little bit far from him) and then a surprise falcon kick.
edit: if hes close to the pipe, use fair to sheidgrab, or use a simple ftilt if he tries to dashgrab and then you can punish him.
also you could try to short hop dair when he tries to grab you.
edit: if hes close to the pipe, use fair to sheidgrab, or use a simple ftilt if he tries to dashgrab and then you can punish him.
also you could try to short hop dair when he tries to grab you.