I don't know how he managed to get the Speaker by the short ones, but then again Boehner seems to believe if he doesn't do anything he can't make a mistake.
Even before Ted Cruz entered the arena, Boehner was on shaky ground because of the Tea Party crowd who had threatened him with the loss of the speakership if he did not toe the line. In 2010 Boehner was narrowly reelected as Speaker by just 3 votes. John Boehner is frightened of losing his job and is reminded of this daily by the right-winger extremists, aka, the tea Party; the Speaker has expediently placed his career above what is ethically right for the American people. His reasoning might be impaired, possibly, by too much strong alcohol, and this has weakened him so that he cries easily in public and is a foil for the likes of Cruz who bullies him with his harsh overt aggressiveness.
Speaker Boehner, under normal circumstances, is a genial type personality but in the present environment, he is an impotent leader, unfit for the position he's barely holding on to; in today's bitterly polarized climate between the parties, he seems led by the nose by the Tea Party. But to be fair, any GOP leader might fail with the Tea Party calling the shots.