Logan generally didn't trust anyone. This was a fact. However, some people he trusted less than others. Such was the case with the infamous Vanisher. The guy had a reputation, and none of it was good, and most of it was true. Logan had his sources. So when he walked by Charles' office and he caught Telford's scent coming from inside, he bared his teeth. He knew for a fact the Professor was due to be downstairs with Cerebra, and he didn't smell Chuck anywhere near.
He took off at a silent run to the end of the hallway and put the silent alarm on standby with his authorization code. He then climbed out the next available window and onto the ledge, making his way to Xavier's window. Now, Logan was the kind of guy who had taken the time to practice opening the mansion's windows from the outside with one of his claws. He would have happily smashed through it, but he didn't feel like replacing any more property than he had to. The moment Telford's back was to him, he sneaked inside and tackled Telford. The sickening crunch of his adamantium heavy body pinning the teleporter to the floor was mildly satisfying. His claws were out and at the man's throat.
"You can't teleport before I slit your jugular open, so you'll die wherever you end up. Or you can stay, and tell me what the hell you're doing in Chuck's office, you little shit. I knew you were up to no good the moment I caught your stink," he growled, teeth still bared.