I can't see Uruguay admitting anything.
Lot's of South American cultures place a high value on protecting their own…it's called individualism v collectivism.
I use this in cultural training with my work and it's an extensive study but here is a brief Wiki overview.
http://en.wikipedia.org/wiki/Hofstede's_cultural_dimensions_theory
In some research undertaken by cultural expert Hofstede, he analysed the responses people would give to the police in different types of circumstances.
In Europe, individual integrity is a massive thing, so if someone in your family killed someone (as an extreme example), you would be honest with the police and NOT support your family member. Doing the right thing and taking personal responsibility is critical…it's about being honest within societal norms.
South American countries ranked the lowest to this question, saying they wouldn't help police and would 100% back their own. They have a collective view on responsibility and as a consequence incredible loyalty to each other regardless of the behaviour.
So there is a culture clash here between European press demanding one thing and a Uruguayan Football Team responding completely different. It has nothing to do with whether or not the Uruguay FA, management or players saw anything, agree Suarez bit someone or think he should be punished.
It is totally within their cultural norm to protect their own and admit nothing.
It's not right or wrong….it's just different.