Try the "Gordon Ramsey".

That's fucked! You're bonkers! Tell me honestly you don't think there's a problem with what you just did...

You have got to be the. worst. frontman I've ever seen in my entire life.

I only see one problem with this band and it's YOU!

then once he starts crying, be like

Yo man we got you some voice lessons and signed you up for improv classes to work on your showmanship, you're really an incredibly important part of the band, and we want to help you start taking charge, open up, and put our band back on the map.

Oh and we got you some new clothes... Wear them...