Context is that protagonist suddenly found himself in unusual place/situation and trying to understand where he is and how he can possibly got there. After some rejected ideas he ";thinks" this. (Situation in no way is related to "lever").
";Complete" sentence is:
てことは――。
And I'm not even sure if it should be read as て こと は or てこ と は. Both variants seems to make no sense. From context I suspect that it may be some swear, but edict has many swear words, but not this...
Any suggestions?
edit: added context