I managed to see him perform several times around that era.

One concert I recall Shane managed to sing only three or so songs. He fell backwards, and was eventually dragged off stage. The rest of the band carried on.

Another, Shane made it about half way, but noticeably inebriated, and then just disappeared. The rest of the band just carried on.

The concert with the Popes, Shane had to carry the show, so he made it all the way through a couple of hours.

RIP Shane.