If you read enough property law cases, you'll discover that this kind of fact pattern is (unfortunately) common.
Although I cannot and will not comment on the specific situation of the original poster, I will post the following basic facts about Texas law, which may be of some interest.
In Texas (as in many states), it is unlawful to forcibly retake possession of property if another person is "in actual possession of the property", even if the person presently in possession "acquired possession by forcible entry". Texas Property Code §
24.001. If squatters are in "actual possession", the only lawful way to remove them is to obtain an order from the Court by following the procedures set out in Texas Property Code §§
24.002 et seq.
On the other hand, if the squatters are
not in "actual possession" and otherwise have no legal or equitable claim to the property but remain on the property after being asked to leave, they are committing the crime of criminal trespass and can be unceremoniously removed by a law enforcement officer without due process of law. Texas Penal Code §
30.05 (definition of criminal trespass); Texas Code of Criminal Procedure §
14.01 (officer may arrest "for any offense committed in his presence or within his view").
Whether a law enforcement officer will be able to remove the squatters will depend on whether the officer is satisfied that the squatters are not in "actual possession" and that they otherwise have no legal or equitable claim to the property. If the officer is not satisfied in that regard, a court order will need to be obtained to remove the squatters.
I express no view on whether the squatters described in the original post are in "actual possession" of the property.