I've been looking for about an hour thru internet and I got to a Toronto web page talking about World Football League, which I didn't know it was an existing league played in the States in 1974 and part of 1975. And in the rules page, this is what I found. Read, there is a little reference about moving the goalposts from center to end of the end zone.
The WFL had several important rules differences from the National Football League of that era:
- Touchdowns were worth 7 points, instead of 6.
- Conversions, called "action points", could only be scored via a run or pass play (as opposed to by kick as in other football leagues), and were worth one point.
- Kickoffs were from the 30-yard line instead of the 40. Prior to 1974, NFL teams kicked off from the 40; starting in 1974, the NFL moved its kickoffs back to the 35. Twenty years later, the kickoff line was pushed back to the 30.
- Receivers needed only one foot in bounds for a legal pass reception, instead of two feet in the NFL then and now. College and high school football have always used the one-foot rule.
- Bump-and-run pass coverage was outlawed once a receiver was 3 yards beyond the line of scrimmage. The NFL later adopted this rule, with a 5-yard bump zone.
- The goalposts were placed at the end line (the back of the end zone). At that time, college football goalposts were at the end line, but the NFL had its goalposts at the goal line from 1933 through 1973. Starting with the 1974 season, the NFL also moved its posts back to the end line.
No reference at all about a player paralyzed for hitting goalpost.