Well put.
Trump needs all the help he can get now and after he is elected.
Yes he does, and yes he will. I opined back in December (or thereabouts), that neither Trump nor Cruz could win the general election without the support of the other's supporters. The results of the actually contested primary elections/caucuses support that opinion.
Now we're in the middle of the general election; Trump needs the support of the (former) Cruz supporters. Without them he will not be elected. Anybody who works to alienate those Cruz supporters is trying to get Hildebeeste elected.