Warwickshire beat Lancashire at OT in the 1964 semi final. Due to their behaviour, 2 Lancashire players were released from their contracts. Also, according to Wisden, both sides were barracked as they left the field.

Anyone know what happened?

Warwickshire scored 294-7 off their 60 overs, which was a massive total in those days. Lancashire initially made a good effort to chase the runs so Mike (M.J.K.) Smith set defensive fields. There were no fielding restrictions so he could have 9 men on the boundary if he wanted. The crowd didn't like it and the Lancashire wicket keeper, Geoff Clayton, protested first by appealing against the light and then blocking, so that he scored 19 in 19 overs. He was not out at the end, with Lancashire 209-7.
Clayton was dropped by Lancashire and not re-engaged - he went to Somerset. I think Peter Marner was the other player not re-engaged but I'm not sure whether it was because of that match - there was a lot of trouble within the Club at that time.

Just to add a bit more from Jack Bannister's Club history - and he actually played in the match.
Apparently, the Lancashire players refused to attend the Man of the Match ceremony (possibly because M.J.K. was to be given the award). The Warwickshire players decided to have their victory drink on the journey back rather than linger at the ground.
Lancashire had scored 70 off nine overs before tea (yes, they used to have a tea interval part way through a one-day innings) and it was on the resumption that M.J.K. put eight of his nine fielders on the boundary.
The obvious response would have been to push for lots of ones and twos. But it was the early days of one day cricket and Lancs opener David Green apparently said: "one day cricket is about hitting boundaries, not running up and down the pitch."

I was at that match and still recall Clayton's "protest". I guess it wasn't long before fielding restrictions were brought into play but it was all legal then.
Looking at the scorecard, I see that Sonny Ramadhin played in that match but I confess I have no recollection of him. I really didn't think I was old enough to have seen Ramadhin....

The great Sonny Ramadhin, whose son-in-law played for Warwickshire.

Fielding restrictions were introduced about 16 years later around 1980, after the World Series Cricket ODI's in Australia.

Well.....thanks for all the replies. I think Marner became the groundsman at OT in later years.

I think it was Peter Marron who was the Old Trafford groundsman.