It was more than the Big 10; the vote itself was 10-5.
But some controversy came up about a week ago, though, because it was revealed that at the actual vote two of the reps - the PAC-12 rep and the Sun Belt rep - voted for the ban against the actual wishes of their conferences. In the PAC-12's case, the commissioner Larry Scott revealed that the conference's vote actually had been along the lines of 11 of the 12 schools in favor of satellite camps, with 1 vote against them made by the UCLA AD...who was also the PAC-12 rep for the main vote.
The Sunbelt rep apparently did the same, meaning that the 10-5 vote to ban should have actually been an 8-7 vote not to ban (power conference votes count double in this). (There's some thought that possibly the SEC might have threatened to discontinue games against the Sunbelt teams had the Sunbelt not voted to ban...but that's just supposition at this point).
Satellite camp saga deepens as Pac-12 commish reveals new information
But afterwards- and what probably led to the ban actually being rescinded- the US Department of Justice started an informal inquiry... calling college football coaches, conference commissioners, and college administrators.
U.S. Department of Justice to take a peak at satellite ban
That's probably what changed all this.