Good morning Lynn,
I'm sorry to hear of your dilemma.
Perhaps the quickest method to get him out of the house is to have the police come and arrest him for possession and use of the illegal drugs. Once he is arrested for that, you may seek a protective order against him based on the fact that you have custody of a minor grandchild and the illegal drugs being used in the home constitute child endangerment.
At the same time you will need to follow through with the eviction.
And, in the meantime, consider applying to the court for a restraining order against him based on the fact that he is using illegal drugs in your home while your minor grandchild is present in the home. If you can get the court to issue the temporary restraining order, he will be excluded from the home and ordered not to have contact with you until the hearing on the restraining order---which in Texas is typically two to three weeks after the temporary order is issued.
I wish you the best in 2012.
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