X-PAC: i tore my butthole and nearly died

Former WWE star X-Pac tells TMZ ... he lost so much blood after
tearing his anus apart during a wrestling match in Minneapolis last
weekend ... he nearly died.

Pac -- real name Sean Waltman -- says he didn't notice the blood at
first ... and even finished the match ... but during the after-party
he felt something was really wrong. Pac says he went to the bathroom
and discovered an enormous pool of blood in his singlet.

That's when Pac called himself an ambulance.

As we reported, Pac underwent butthole surgery that night ... and was
released Monday morning. FYI, the procedure is called a
sphincteroplasty (WARNING: Do not Google).

We've obtained video of the accident ... you see Pac flying
anus-first into the steel turnbuckle ... the footage of the accident
from RFvideo.com is pretty brutal.

As for going #2 ... Pac says it's business as usual, but he was given
special instructions by his doctor on how to clean his wound after
pooping.